Cita APA (7a ed.)

Mangold, W. (1971). New modern english: (EGB). I, Guía didáctica. Mangold.

Cita Chicago Style (17a ed.)

Mangold, Walter. New Modern English: (EGB). I, Guía Didáctica. Madrid: Mangold, 1971.

Cita MLA (9a ed.)

Mangold, Walter. New Modern English: (EGB). I, Guía Didáctica. Mangold, 1971.