Cita APA (7th ed.)

Kaufman, P. B., & LaCroix, J. D. (1979). Plants, people and environment. Macmillan.

Cita Chicago (17th ed.)

Kaufman, Peter B., i J. Donald LaCroix. Plants, People and Environment. New York: Macmillan, 1979.

Cita MLA (9th ed.)

Kaufman, Peter B., i J. Donald LaCroix. Plants, People and Environment. Macmillan, 1979.