Cita APA

De Schweinitz, K. 1. (1924). The art of helping people out of trouble ([1. edition].). Boston: Houghton Mifflin.

Citación estilo Chicago

De Schweinitz, Karl 1887-1975. The Art of Helping People Out of Trouble. [1. edition]. Boston: Houghton Mifflin, 1924.

Cita MLA

De Schweinitz, Karl 1887-1975. The Art of Helping People Out of Trouble. [1. edition]. Boston: Houghton Mifflin, 1924.