APA

Postlethwait J. H., Hopson J. L., . (1989). The nature of life. New York: McGraw-Hill Pub. Co.

Chicago

Postlethwait John H, Hopson Janet L, . 1989. The nature of life. New York: McGraw-Hill Pub. Co.

Harvard

Postlethwait J. H., Hopson J. L., . (1989). The nature of life. New York: McGraw-Hill Pub. Co.

MLA

Postlethwait John H, Hopson Janet L, . The nature of life. New York: McGraw-Hill Pub. Co. 1989.