APA Style

Sagan, Carl, 1934-1996. (2013). Cosmos (2nd ed). New York: Ballantine Books.

Chicago Style

Sagan, Carl, 1934-1996. Cosmos. 2nd ed New York: Ballantine Books, 2013. Textbook.

MLA Style

Sagan, Carl, 1934-1996. Cosmos. 2nd ed New York: Ballantine Books, 2013. Textbook.

Turabian Style

Sagan, Carl, 1934-1996. Cosmos. 2nd ed New York: Ballantine Books, 2013. Textbook.