APA

Diamond J. M., . (1999). Guns, germs, and steel. New York, New York, United States: W. W. Norton and Company.

Chicago

Diamond Jared M, . 1999. Guns, germs, and steel. New York, New York, United States: W. W. Norton and Company.

Harvard

Diamond J. M., . (1999). Guns, germs, and steel. New York, New York, United States: W. W. Norton and Company.

MLA

Diamond Jared M, . Guns, germs, and steel. New York, New York, United States: W. W. Norton and Company. 1999.