APA ציטוט

Kohler, H. (1968). Scarcity challenged: An introduction to economics.

Chicago Edition Citation

Kohler, Heinz. Scarcity Challenged: An Introduction to Economics. Holt Rinehart & Winston Publishers, New York, 1968.

ציטוט MLA

Kohler, Heinz. Scarcity Challenged: An Introduction to Economics. 1968.