Cita APA

Trapp, M. A. 1., & Trapp, M. A. 1. (1966). Yesterday, today, and forever. [Garden City, New York]: Echo Books.

Citación estilo Chicago

Trapp, María Augusta 1905-1987, y María Augusta 1905-1987 Trapp. Yesterday, Today, and Forever. [Garden City, New York]: Echo Books, 1966.

Cita MLA

Trapp, María Augusta 1905-1987, y María Augusta 1905-1987 Trapp. Yesterday, Today, and Forever. [Garden City, New York]: Echo Books, 1966.