Cita APA (7a ed.)

Craven, F., & Parry, J. (1981). Grass: A profitable crop. Nickersons Seed Specialists.

Cita Chicago Style (17a ed.)

Craven, Fred, y John Parry. Grass: A Profitable Crop. Grimsby: Nickersons Seed Specialists, 1981.

Cita MLA (8a ed.)

Craven, Fred, y John Parry. Grass: A Profitable Crop. Nickersons Seed Specialists, 1981.