Παραπομπή APA

Samuelson, P. A. (1967). Economics: An introductory nalysis/7e (7th ed.). Mc Graw Hill Book company.

Παραπομπή Chicago Style

Samuelson, Paul A. Economics: An Introductory Nalysis/7e. 7th ed. London: Mc Graw Hill Book company, 1967.

Παραπομπή MLA

Samuelson, Paul A. Economics: An Introductory Nalysis/7e. 7th ed. Mc Graw Hill Book company, 1967.