Chaisson, Eric
Astronomy today : third edition
Prentice-Hall, 1999
Buku Referensi
Baker, Robert H.
Astronomy
D. Van Nostrand, 1964
Buku Teks SO
Chapman, Robert D.
Discovering astronomy
W.H. Freeman, 1978
Buku Teks SO
Shaffer, Rick
Introduction to astronomy
Gramercy Books, 1994
Buku Referensi
Jefferys, William H.
Discovering astronomy
John Wiley & Sons, 1981
Buku Teks SO