Scarcity challenged;
an introduction to economics.
APA Citation
Köhler, H. (1968). Scarcity challenged: an introduction to economics. New York: Holt, Rinehart and Winston.
MLA Citation
Köhler, Heinz. Scarcity Challenged: an Introduction to Economics. New York: Holt, Rinehart and Winston, 1968.
Warning: These citations may not always be complete (especially for serials).