Cita APA (7a ed.)

Harrar, E. S., & Harrar, J. G. (1962). Guide to southern trees (2a. ed.). Dover.

Cita Chicago Style (17a ed.)

Harrar, Ellwood Scott, y Jacob George Harrar. Guide to Southern Trees. 2a. ed. Nueva York: Dover, 1962.

Cita MLA (9a ed.)

Harrar, Ellwood Scott, y Jacob George Harrar. Guide to Southern Trees. 2a. ed. Dover, 1962.