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If you are quoting something you away use double. However, if you are writing a book/short story you can use this example of using both single and double. Example: Betty quoted from the book, " 'How do we find a way out? said Dave' ". The reason for using both single and double is because in a book/short story when ever someone is talking there are always double quotation marks and if the person in the book/short story is quoting something like from a book (see example) you use single quotation marks on the in side to let the reader know that it is a quote from some in side the book/short story that the character is quoting from and the double quotation marks on the out side of the single quotation marks shows the reader the the character is talking.
Hope this helps you! :)
Thank you for the response. However, the quotation is over 4 lines, so it is in a block quote...inside the quotation is another quotation...since the original is indented, I am trying to determine if the secondary quotation gets single or double quotation marks. I hope this clarifies my question.
It would most likely be single. However, you should ask your teacher he/she maybe able to help you with your question better than I can. Sorry for the confuse. :3