Cita APA (7a ed.)

Willemstein, S. (1987). An evolutionary basis for pollination ecology. Leiden University Press.

Cita Chicago Style (17a ed.)

Willemstein, S.C. An Evolutionary Basis for Pollination Ecology. Leiden: Leiden University Press, 1987.

Cita MLA (9a ed.)

Willemstein, S.C. An Evolutionary Basis for Pollination Ecology. Leiden University Press, 1987.