APA (7th ed.) Citation

Muzzey, D. S. (1929). Key to Twenty tests to accompany Muzzey's "History of the American people". Ginn and Co..

Chicago Style (17th ed.) Citation

Muzzey, David Saville. Key to Twenty Tests to Accompany Muzzey's "History of the American People". Boston : New York [etc.]: Ginn and Co., 1929.

MLA (8th ed.) Citation

Muzzey, David Saville. Key to Twenty Tests to Accompany Muzzey's "History of the American People". Ginn and Co., 1929.