Cita APA (7a ed.)

Smith, E. T. (1954). Exploring biology (4th ed.). Harcourt, Brace.

Cita Chicago Style (17a ed.)

Smith, Ella Thea. Exploring Biology. 4th ed. New York: Harcourt, Brace, 1954.

Cita MLA (8a ed.)

Smith, Ella Thea. Exploring Biology. 4th ed. Harcourt, Brace, 1954.