APA (7th ed.) Citation

Fægri, K., & Pijl, L. v. d. (1971). The principles of pollination ecology (2. rev. ed.). Pergamon Press.

Chicago Style (17th ed.) Citation

Fægri, Knut, and Leendert van der Pijl. The Principles of Pollination Ecology. 2. rev. ed. Oxford [u.a.]: Pergamon Press, 1971.

MLA (9th ed.) Citation

Fægri, Knut, and Leendert van der Pijl. The Principles of Pollination Ecology. 2. rev. ed. Pergamon Press, 1971.