Starr, C. (1978). Biology: The Unity and Diversity of Life (9th ed.). Wadsworth Publishing Company.
Cita Chicago (17th ed.)Starr, Cecie. Biology: The Unity and Diversity of Life. 9th ed. California: Wadsworth Publishing Company, 1978.
Cita MLA (9th ed.)Starr, Cecie. Biology: The Unity and Diversity of Life. 9th ed. Wadsworth Publishing Company, 1978.
Atenció: Aquestes cites poden no estar 100% correctes.