APA (7. basım) Alıntı

Willigen, P. d., & Noordwijk, M. v. (1987). Roots, plant production and nutrient use efficiency. Landbouwuniversiteit te Wageningen.

Chicago Style (17. basım) Atıf

Willigen, Peter de, ve Meine van Noordwijk. Roots, Plant Production and Nutrient Use Efficiency. Wageningen: Landbouwuniversiteit te Wageningen, 1987.

MLA (8th ed.) Atıf

Willigen, Peter de, ve Meine van Noordwijk. Roots, Plant Production and Nutrient Use Efficiency. Landbouwuniversiteit te Wageningen, 1987.