Gaya APA

GRIESBRECHT, M, G. (1978). AN INQUIRY INTO THE NATURE AND CAUSES OF THE WEALTH OF PEOPLE . san francisco: WILLIAM KAUFMANN INC..

Gaya MLA

GRIESBRECHT, MARTIN, GERHARD. "AN INQUIRY INTO THE NATURE AND CAUSES OF THE WEALTH OF PEOPLE". san francisco: WILLIAM KAUFMANN INC., 1978. Text.