Cita APA

Stephen, W. P. (1972). Studies in crop pollination. O.E.A.

Citación estilo Chicago

Stephen, W. P. Studies in Crop Pollination. Washington, D.C, USA: O.E.A, 1972.

Cita MLA

Stephen, W. P. Studies in Crop Pollination. O.E.A, 1972.