APA
Lof P., Baren H. v., International Soil Reference and Information Centre, FAO, UNESCO & Elsevier (Amsterdam). (1993). Soils of the world. Amsterdam: Elsevier Science Publishers.
Chicago
Lof P, Baren Hans van, International Soil Reference and Information Centre, FAO, UNESCO and Elsevier (Amsterdam). 1993. Soils of the world. Amsterdam: Elsevier Science Publishers.
Harvard
Lof P., Baren H. v., International Soil Reference and Information Centre, FAO, UNESCO and Elsevier (Amsterdam). (1993). Soils of the world. Amsterdam: Elsevier Science Publishers.
MLA
Lof P, Baren Hans van, International Soil Reference and Information Centre, FAO, UNESCO and Elsevier (Amsterdam). Soils of the world. Amsterdam: Elsevier Science Publishers. 1993.