APA استشهاد

Hawking, S. (1998). A brief history of time (Updated and expanded tenth anniversary ed.). Bantam Books.

استشهاد بنمط شيكاغو

Hawking, Stephen. A Brief History of Time. Updated and expanded tenth anniversary ed. New York: Bantam Books, 1998.

MLA استشهاد

Hawking, Stephen. A Brief History of Time. Updated and expanded tenth anniversary ed. Bantam Books, 1998.