Cita APA (7th ed.)

Weaver, J. E., & Clements, F. E. (1938). Plant ecology (2nd ed.). McGraw-Hill Book Company, Inc..

Cita Chicago (17th ed.)

Weaver, John E., i Frederic E. Clements. Plant Ecology. 2nd ed. New York ; London: McGraw-Hill Book Company, Inc., 1938.

Cita MLA (9th ed.)

Weaver, John E., i Frederic E. Clements. Plant Ecology. 2nd ed. McGraw-Hill Book Company, Inc., 1938.