APA (7th ed.) Citation

Müller, A. (1999). The pocket idiot's guide to German. Alpha Books.

Chicago Style (17th ed.) Citation

Müller, Alice. The Pocket Idiot's Guide to German. New York: Alpha Books, 1999.

MLA (9th ed.) Citation

Müller, Alice. The Pocket Idiot's Guide to German. Alpha Books, 1999.