Gaya APA

Diehl, H, S. (1969). Elements of healthful living / Harold S. Diehl, Willard Dalrymple (4th ed.). : McGraw-Hill Book Company.

Gaya MLA

Diehl, Harold, S.. "Elements of healthful living / Harold S. Diehl, Willard Dalrymple". 4th ed. : McGraw-Hill Book Company, 1969. Referensi.