Cita APA (7a ed.)

Hynek, J. (1951). Astrophysics: : A Topical Symposium. McGraw-Hill.

Cita Chicago Style (17a ed.)

Hynek, J.A. Astrophysics: : A Topical Symposium. New York: McGraw-Hill, 1951.

Cita MLA (9a ed.)

Hynek, J.A. Astrophysics: : A Topical Symposium. McGraw-Hill, 1951.