APA استشهاد

Young, K. (1975). Geology: The paradox of earth and man. Houghton.

استشهاد بنمط شيكاغو

Young, Keith. Geology: The Paradox of Earth and Man. Boston: Houghton, 1975.

MLA استشهاد

Young, Keith. Geology: The Paradox of Earth and Man. Houghton, 1975.