APA-referens (7:e uppl.)

Heard, S. D., King, M. W., & Prittie, E. J. (1933). Stories of American explorers and settlers. John C. Winston Co.

Chicago-referens (17:e uppl.)

Heard, Sarah Dow, Morrill Whitney King, och Edwin John Prittie. Stories of American Explorers and Settlers. Philadelphia, Chicago [etc.]: John C. Winston Co, 1933.

MLA-referens (8:e uppl.)

Heard, Sarah Dow, et al. Stories of American Explorers and Settlers. John C. Winston Co, 1933.