Cita APA (7a ed.)

Petr, J. (1991). Weather and yield. Elsevier.

Cita Chicago Style (17a ed.)

Petr, Jihri. Weather and Yield. Amsterdam: Elsevier, 1991.

Cita MLA (9a ed.)

Petr, Jihri. Weather and Yield. Elsevier, 1991.