APA

Willcox W. F. e., Willcox W. F., Ferenczi I., National Bureau of Economic Research & International Labour Office. (1931). International migrations. New York: National Bureau of Economic Research.

Chicago

Willcox Walter F ed, Willcox Walter Francis, Ferenczi Imre, National Bureau of Economic Research and International Labour Office. 1931. International migrations. New York: National Bureau of Economic Research.

Harvard

Willcox W. F. e., Willcox W. F., Ferenczi I., National Bureau of Economic Research and International Labour Office. (1931). International migrations. New York: National Bureau of Economic Research.

MLA

Willcox Walter F ed, Willcox Walter Francis, Ferenczi Imre, National Bureau of Economic Research and International Labour Office. International migrations. New York: National Bureau of Economic Research. 1931.