Cita APA (7th ed.)

Levy , C. K. (1978). Elements of biology (2nd ed.). Addison-Wesley.

Cita Chicago (17th ed.)

Levy , Charles K. Elements of Biology. 2nd ed. Reading, Mass: Addison-Wesley, 1978.

Cita MLA (9th ed.)

Levy , Charles K. Elements of Biology. 2nd ed. Addison-Wesley, 1978.