Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.