APA (7th ed.) Citation

Shippen, K. B. (1951). Leif Eriksson, first voyager to America. Harper & Brothers.

Chicago Style (17th ed.) Citation

Shippen, Katherine B. Leif Eriksson, First Voyager to America. New York: Harper & Brothers, 1951.

MLA (9th ed.) Citation

Shippen, Katherine B. Leif Eriksson, First Voyager to America. Harper & Brothers, 1951.

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