Cita APA (7th ed.)

Gagarin, Y., & Lebedev, V. (1969). Survival in space. Frederick A. Praeger.

Cita Chicago (17th ed.)

Gagarin, Yuri, i Vladimir Lebedev. Survival in Space. New York: Frederick A. Praeger, 1969.

Cita MLA (9th ed.)

Gagarin, Yuri, i Vladimir Lebedev. Survival in Space. Frederick A. Praeger, 1969.