APA (7th ed.) Citation

Shu, F. H. (1982). The physical universe: An introduction to astronomy. Univ. Science Books.

Chicago Style (17th ed.) Citation

Shu, Frank H. The Physical Universe: An Introduction to Astronomy. Mill Valley, CA: Univ. Science Books, 1982.

MLA (9th ed.) Citation

Shu, Frank H. The Physical Universe: An Introduction to Astronomy. Univ. Science Books, 1982.