PERIASWAMY , S., & ASHAYE, T. 1. (2020). Updated classification of Southwestern Nigeria soils. The Faculty of Agriculture Obafemi Awolowo University, Ile-Ife, Nigeria.
Chicago-viite (17. p.)PERIASWAMY , S.P., ja T. 1 ASHAYE. Updated Classification of Southwestern Nigeria Soils. The Faculty of Agriculture Obafemi Awolowo University, Ile-Ife, Nigeria, 2020.
MLA-viite (9. p.)PERIASWAMY , S.P., ja T. 1 ASHAYE. Updated Classification of Southwestern Nigeria Soils. The Faculty of Agriculture Obafemi Awolowo University, Ile-Ife, Nigeria, 2020.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.