Cita APA (7a ed.)

Huebener, T., & Newmark, M. (1973). A ... course in German (3. ed.). Heath.

Cita Chicago Style (17a ed.)

Huebener, Theodore, y Maxim Newmark. A ... Course in German. 3. ed. Lexington, Massachusetts: Heath, 1973.

Cita MLA (9a ed.)

Huebener, Theodore, y Maxim Newmark. A ... Course in German. 3. ed. Heath, 1973.