Cita APA (7th ed.)

Fried, G. H. (1999). Schaum's outline of theory and problems of biology (2nd ed.). McGraw-Hill.

Cita Chicago (17th ed.)

Fried, George H. Schaum's Outline of Theory and Problems of Biology. 2nd ed. New York: McGraw-Hill, 1999.

Cita MLA (9th ed.)

Fried, George H. Schaum's Outline of Theory and Problems of Biology. 2nd ed. McGraw-Hill, 1999.