APA-ийн эшлэл(7 дахь хэвлэлт)

Okonkwo, O. (2011). Inter-partner learning in asymmetric alliances between foreign and indigenous companies in the Nigerian oil industry. Lang.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Okonkwo, Okechukwu. Inter-partner Learning in Asymmetric Alliances Between Foreign and Indigenous Companies in the Nigerian Oil Industry. Frankfurt am Main: Lang, 2011.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Okonkwo, Okechukwu. Inter-partner Learning in Asymmetric Alliances Between Foreign and Indigenous Companies in the Nigerian Oil Industry. Lang, 2011.