Cita APA (7th ed.)

Seeds, M. A. (1985). Horizons: Exploring the universe. Wadsworth.

Cita Chicago (17th ed.)

Seeds, Michael A. Horizons: Exploring the Universe. Belmont, Calif.: Wadsworth, 1985.

Cita MLA (9th ed.)

Seeds, Michael A. Horizons: Exploring the Universe. Wadsworth, 1985.