Cita APA

Wheeler, F., & Wheeler, F. (1940). The 19 steps: By the master in the purple robe. Seattle, Wash.: [editor no identificado].

Citación estilo Chicago

Wheeler, Fern, y Fern Wheeler. The 19 Steps: By the Master in the Purple Robe. Seattle, Wash.: [editor no identificado], 1940.

Cita MLA

Wheeler, Fern, y Fern Wheeler. The 19 Steps: By the Master in the Purple Robe. Seattle, Wash.: [editor no identificado], 1940.