APA (7e ed.) Bronvermelding

Bell, P. W., & Todaro, M. P. (1969). Economic theory: An integrated text with special reference to tropical Africa and other developing areas. Oxford University Press.

Chicago (17e ed.) Bronvermelding

Bell, Philip W., en Michael P. Todaro. Economic Theory: An Integrated Text with Special Reference to Tropical Africa and Other Developing Areas. Nairobi: Oxford University Press, 1969.

MLA (9e ed.) Bronvermelding

Bell, Philip W., en Michael P. Todaro. Economic Theory: An Integrated Text with Special Reference to Tropical Africa and Other Developing Areas. Oxford University Press, 1969.