APA

Seeds M. A., . (1999). Foundations of Astronomy. Belmont: Wad Sworth Publishing Company.

Chicago

Seeds Michal A, . 1999. Foundations of Astronomy. Belmont: Wad Sworth Publishing Company.

Harvard

Seeds M. A., . (1999). Foundations of Astronomy. Belmont: Wad Sworth Publishing Company.

MLA

Seeds Michal A, . Foundations of Astronomy. Belmont: Wad Sworth Publishing Company. 1999.