Cita APA (7a ed.)

Eckersley, C. E., & Kaufmann, W. A. 1. (1964). A commercial course for foreign students. Longmans.

Cita Chicago Style (17a ed.)

Eckersley, Charles Ewart, y Walter Arnold 1921 Kaufmann. A Commercial Course for Foreign Students. London: Longmans, 1964.

Cita MLA (9a ed.)

Eckersley, Charles Ewart, y Walter Arnold 1921 Kaufmann. A Commercial Course for Foreign Students. Longmans, 1964.