Abell, George O.
Exploration of the universe
Holt Rinehart and Winston, 1974
 Buku Teks
Koupelis, Theo
In quest of the universe
Jones & Bartlett learning, 2011
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Seeds, Michael A.
Horizons, explosing the universe / Michael A. Seeds
Wadsworth, 1981
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Goldsmith, Donald
The Run away universe : the race to find the future of the cosmos
Perseus Books, 2000
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Wood, Harley
Unveiling the universe : the aims and achievements of astronomy / Harley Wood
Angus and Robertson, 1967
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