Rotzoll, Kim B.
GRID Publishing, 1976
Buku Teks
Rotzoll, Kim B.
South-Western Publishing Co., 1986
Buku Teks
Sandage, C.H.
Richard D. Irwin, 1961
Buku Teks
Sandage, C.H.
Richard D. Irwin, 1960
Buku Teks
Bovee, Courtland L., author
Richard D. Irwin, 1989
Buku Teks