Cita APA (7th ed.)

Cooper, M. M., & Morris, D. W. (1977). Grass farming (4a. ed.). Farming Press.

Cita Chicago (17th ed.)

Cooper, M. McGregor, i D. W. Morris. Grass Farming. 4a. ed. Ipswich: Farming Press, 1977.

Cita MLA (9th ed.)

Cooper, M. McGregor, i D. W. Morris. Grass Farming. 4a. ed. Farming Press, 1977.