Cita APA (7a ed.)

Longsworth, P. (1959). Exploring caves. Thomas Y. Crowell.

Cita Chicago Style (17a ed.)

Longsworth, Polly. Exploring Caves. New York: Thomas Y. Crowell, 1959.

Cita MLA (9a ed.)

Longsworth, Polly. Exploring Caves. Thomas Y. Crowell, 1959.