Erhun, W. O. (2018). A Tree Model for Managing Medicine Use and Supply. Obafemi Awolowo University Press Limited.
Čikaški stil citiranja (17. izdanje)Erhun, Wilson Oyekigho. A Tree Model for Managing Medicine Use and Supply. Obafemi Awolowo University Press Limited, 2018.
MLA način citiranja (9. izdanje)Erhun, Wilson Oyekigho. A Tree Model for Managing Medicine Use and Supply. Obafemi Awolowo University Press Limited, 2018.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.