Seeds, M. A. (1986). Foundations of astronomy (1986 edition.). Wadsworth Publishing Company.
Citazione stile Chigago Style (17a edizione)Seeds, Michael A. Foundations of Astronomy. 1986 edition. Belmont, California: Wadsworth Publishing Company, 1986.
Citatione MLA (9a ed.)Seeds, Michael A. Foundations of Astronomy. 1986 edition. Wadsworth Publishing Company, 1986.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.