Παραπομπή APA

Harvey J. (1969). Modern ecomomics: An introduction for business and professional students. Macmillian.

Παραπομπή Chicago Style

Harvey J. Modern Ecomomics: An Introduction for Business and Professional Students. London: Macmillian, 1969.

Παραπομπή MLA

Harvey J. Modern Ecomomics: An Introduction for Business and Professional Students. Macmillian, 1969.