Seeds, M. A. (1993). Horizons: Exploring the universe (4th edition.). Wadsworth Publishing Company.
Chicago Style (17th ed.) CitationSeeds, Michael A. Horizons: Exploring the Universe. 4th edition. Belmont, California: Wadsworth Publishing Company, 1993.
MLA (8th ed.) CitationSeeds, Michael A. Horizons: Exploring the Universe. 4th edition. Wadsworth Publishing Company, 1993.
Warning: These citations may not always be 100% accurate.