Cita APA (7a ed.)

Koppelman, R. (1961). New biology first semester study guide. Addison - Wesley Pub. Co.

Cita Chicago Style (17a ed.)

Koppelman, R. New Biology First Semester Study Guide. London: Addison - Wesley Pub. Co, 1961.

Cita MLA (9a ed.)

Koppelman, R. New Biology First Semester Study Guide. Addison - Wesley Pub. Co, 1961.