Please remember to sign your name on talk pages by clicking or or by typing four tildes (~~~~); this will automatically produce your username and the date. Also, please do your best to always fill in the edit summary field. Below are some useful links to facilitate your involvement. Happy editing! Tito☸Dutta00:14, 3 July 2013 (UTC)[reply]
Hello Avirupkundu, and welcome to Wikipedia. Your addition to Bhooter Bhabishyat has had to be removed, as it appears to have added copyrighted material without permission from the copyright holder. While we appreciate your contributing to Wikipedia, there are certain things you must keep in mind about using information from your sources to avoid copyright or plagiarism issues here.
You can only copy/translate a small amount of a source, and you must mark what you take as a direct quotation with double quotation marks (") and a cited source. You can read about this at Wikipedia:Non-free content in the sections on "text". See also Wikipedia:Referencing for beginners, for how to cite sources here.
Aside from limited quotation, you must put all information in your own words and structure, in proper paraphrase. Following the source's words too closely can create copyright problems, so it is not permitted here; see Wikipedia:Close paraphrasing. (There is a college-level introduction to paraphrase, with examples, hosted by the Online Writing Lab of Purdue.) Even when using your own words, you are still, however, asked to cite your sources to verify information and to demonstrate that the content is not original research.
In very rare cases (that is, for sources that are public domain or compatibly licensed), it may be possible to include greater portions of a source text. However, please seek help at the help desk before adding such content to the article. 99.9% of sources may not be added in this way, so it is necessary to seek confirmation first. If you do confirm that a source is public domain or compatibly licensed, you will still need to provide full attribution; see Wikipedia:Plagiarism for the steps you need to follow.
Also note that Wikipedia articles may not be copied without attribution. If you want to copy from another Wikipedia project or article, you can, but please follow the steps in Wikipedia:Copying within Wikipedia.
It's very important that contributors understand and follow these practices, as policy requires that people who persistently do not must be blocked from editing. If you have any questions about this, you are welcome to leave me a message on my talk page. Thank you. Tito☸Dutta13:06, 2 July 2013 (UTC)[reply]