Cita APA (7th ed.)

Freeman, S. (2002). Biological science. Prentice-Hall, Inc.

Cita Chicago (17th ed.)

Freeman, Scott. Biological Science. Upper Saddle River, New Jersey: Prentice-Hall, Inc, 2002.

Cita MLA (9th ed.)

Freeman, Scott. Biological Science. Prentice-Hall, Inc, 2002.