APA (7th ed.) Citation

American Quartet. (1918). [Keep your head down, Fritzie boy].

Chicago Style (17th ed.) Citation

American Quartet. [Keep Your Head Down, Fritzie Boy]. 1918.

MLA (9th ed.) Citation

American Quartet. [Keep Your Head Down, Fritzie Boy]. 1918.

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