Cita APA (7th ed.)

Schorn, R. A. (1998). Planetary astronomy: From ancient times to the third millennium. Texas A & M University Press.

Cita Chicago (17th ed.)

Schorn, Ronald A. Planetary Astronomy: From Ancient Times to the Third Millennium. College Station, Tex.: Texas A & M University Press, 1998.

Cita MLA (9th ed.)

Schorn, Ronald A. Planetary Astronomy: From Ancient Times to the Third Millennium. Texas A & M University Press, 1998.