Cita APA (7a ed.)

Duff, C. (1974). All purposes French for adults: A comprehensive course on modern lines designed for beginners and others [...] (Reprint.). The English Universities Press.

Cita Chicago Style (17a ed.)

Duff, Charles. All Purposes French for Adults: A Comprehensive Course on Modern Lines Designed for Beginners and Others [...]. Reprint. London: The English Universities Press, 1974.

Cita MLA (9a ed.)

Duff, Charles. All Purposes French for Adults: A Comprehensive Course on Modern Lines Designed for Beginners and Others [...]. Reprint. The English Universities Press, 1974.