APA (7th ed.) Citation

Osborne, L. d. J. (1956). Four keys to El Salvador. Funk & Wagnalls.

Chicago Style (17th ed.) Citation

Osborne, Lilly de Jongh. Four Keys to El Salvador. New York: Funk & Wagnalls, 1956.

MLA (8th ed.) Citation

Osborne, Lilly de Jongh. Four Keys to El Salvador. Funk & Wagnalls, 1956.