APA (7e ed.) Bronvermelding

Time. (1997). Time Great Events of the 20th Century. Time Books.

Chicago (17e ed.) Bronvermelding

Time. Time Great Events of the 20th Century. New York: Time Books, 1997.

MLA (9e ed.) Bronvermelding

Time. Time Great Events of the 20th Century. Time Books, 1997.