توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

GREENLAND, D. (1977). Soil conservation and management in the: Humid tropics : proceedings of the International conference on soil conservation and management in the humid tropics held in Ibadan, Nigeria, in June 1975. John Wiley.

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

GREENLAND, D.J. Soil Conservation and Management in the: Humid Tropics : Proceedings of the International Conference on Soil Conservation and Management in the Humid Tropics Held in Ibadan, Nigeria, in June 1975. New York: John Wiley, 1977.

توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)

GREENLAND, D.J. Soil Conservation and Management in the: Humid Tropics : Proceedings of the International Conference on Soil Conservation and Management in the Humid Tropics Held in Ibadan, Nigeria, in June 1975. John Wiley, 1977.