APA-ийн эшлэл(7 дахь хэвлэлт)

Bell, P. W., & Torado, M. P. (1969). Economic theory: An integrated text with special reference to tropical Africa and other ... Oxford Univ. press.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Bell, Philip W., ба Michael P. Torado. Economic Theory: An Integrated Text with Special Reference to Tropical Africa and Other ... Nairobi: Oxford Univ. press, 1969.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Bell, Philip W., ба Michael P. Torado. Economic Theory: An Integrated Text with Special Reference to Tropical Africa and Other ... Oxford Univ. press, 1969.