Παραπομπή APA

Giesbrecht, M. G. (1972). Evolution of economic society. W.H Freeman and company.

Παραπομπή Chicago Style

Giesbrecht, Martin Gerhard. Evolution of Economic Society. San Francisco: W.H Freeman and company, 1972.

Παραπομπή MLA

Giesbrecht, Martin Gerhard. Evolution of Economic Society. W.H Freeman and company, 1972.