APA (7th ed.) Citation

Gaposchkin, C. H. (1954). Introduction to astronomy. Prentice-Hall.

Chicago Style (17th ed.) Citation

Gaposchkin, Cecilia Helena. Introduction to Astronomy. Englewood-Cliffs, N.J: Prentice-Hall, 1954.

MLA (9th ed.) Citation

Gaposchkin, Cecilia Helena. Introduction to Astronomy. Prentice-Hall, 1954.