Citazione Stile APA (7a Edizione)

Leivtt, I. M. 1., & Cole, D. M. (1963). Exploring the secrets of space; astronautics for the layman. Prentice-Hall.

Citazione stile Chigago Style (17a edizione)

Leivtt, Israel Monroe 1908, e Dandridge M. Cole. Exploring the Secrets of Space; Astronautics for the Layman. Englewood Cliffs, N. J: Prentice-Hall, 1963.

Citatione MLA (9a ed.)

Leivtt, Israel Monroe 1908, e Dandridge M. Cole. Exploring the Secrets of Space; Astronautics for the Layman. Prentice-Hall, 1963.