APA (7th ed.) Citation

Gamble, A. D. (1949). An Ancient Mission Among a Great People. Philadelphia.

Chicago Style (17th ed.) Citation

Gamble, Anna Dill. An Ancient Mission Among a Great People. Philadelphia, 1949.

MLA (8th ed.) Citation

Gamble, Anna Dill. An Ancient Mission Among a Great People. Philadelphia, 1949.

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