Cita APA (7th ed.)

Laegreid, M., Bockman, O. C., & Kaarstad, O. (1999). Agriculture, fertilizers and the environment (1a. ed.). CABI.

Cita Chicago (17th ed.)

Laegreid, Marit, O. C. Bockman, i O. Kaarstad. Agriculture, Fertilizers and the Environment. 1a. ed. CABI, 1999.

Cita MLA (9th ed.)

Laegreid, Marit, et al. Agriculture, Fertilizers and the Environment. 1a. ed. CABI, 1999.