Gerking, Shelby D., author
Burgess, 1970
Buku Teks
edited by Philip C. Laris, Jack G. Reynolds
Burgess, 1970
Buku Teks
Patterson, C.O. Pat, author
Burgess Publishing , 1973
Buku Teks
by Margaret J. Hartman [and others]
Kendall/Hunt, 1976
Buku Teks
by Willis H. Johnson...[et al.]
Holt, Rinehart and Winston, 1974
Buku Teks