APA (7th ed.) Citation

Mangold, W. (1956). New active English (5a ed. rev.). Mangold.

Chicago Style (17th ed.) Citation

Mangold, Walter. New Active English. 5a ed. rev. Madrid: Mangold, 1956.

MLA (9th ed.) Citation

Mangold, Walter. New Active English. 5a ed. rev. Mangold, 1956.