APA Citation

Frank, E. (1939). Vraagstrukken der theoretische economie. Batavia: J.B. Wolters.

Chicago Style Citation

Frank, E. Vraagstrukken Der Theoretische Economie. Batavia: J.B. Wolters, 1939.

MLA Citation

Frank, E. Vraagstrukken Der Theoretische Economie. Batavia: J.B. Wolters, 1939.

Warning: These citations may not always be 100% accurate.