Cita APA (7a ed.)

McDougall, W. B. (1949). Plant ecology (4a. ed.). Lea&Febiger.

Cita Chicago Style (17a ed.)

McDougall, W. B. Plant Ecology. 4a. ed. Philadelphia: Lea&Febiger, 1949.

Cita MLA (8a ed.)

McDougall, W. B. Plant Ecology. 4a. ed. Lea&Febiger, 1949.