Moriarty, Sandra E. (Sandra Ernst), author
Prentice Hall International, 1991
Buku Teks
Sandage, C.H.
Richard D. Irwin, 1960
Buku Teks
Shelly Rodgers and Esther Thorson
Routledge, 2012
Buku Teks
Wells, William D., author
Prentice-Hall, 2000
Buku Teks
Wells, William D., author
Prentice-Hall, 2000
Buku Teks