APA (7th ed.) Citation

Guzmán, M. L., & De Onís, H. (1969). The eagle and the serpent. P. Smith.

Chicago Style (17th ed.) Citation

Guzmán, Martín Luis, and Harriet De Onís. The Eagle and the Serpent. Gloucester, Mass: P. Smith, 1969.

MLA (9th ed.) Citation

Guzmán, Martín Luis, and Harriet De Onís. The Eagle and the Serpent. P. Smith, 1969.