APA (7th ed.) Citation

Marx, K. (2013). Speak German in 90 days: A self study guide to becoming fluent. [CreateSpace Independent Publishing Platform].

Chicago Style (17th ed.) Citation

Marx, Kevin. Speak German in 90 Days: A Self Study Guide to Becoming Fluent. [North Charleston, S.C.]: [CreateSpace Independent Publishing Platform], 2013.

MLA (9th ed.) Citation

Marx, Kevin. Speak German in 90 Days: A Self Study Guide to Becoming Fluent. [CreateSpace Independent Publishing Platform], 2013.

Warning: These citations may not always be 100% accurate.