APA (7th ed.) Citation

Beard, L., & Beard, A. B. (1915). On the trail: An outdoor book for girls. C. Scribner's Sons.

Chicago Style (17th ed.) Citation

Beard, Lina, and Adelia B. Beard. On the Trail: An Outdoor Book for Girls. New York: C. Scribner's Sons, 1915.

MLA (9th ed.) Citation

Beard, Lina, and Adelia B. Beard. On the Trail: An Outdoor Book for Girls. C. Scribner's Sons, 1915.