edited by Benjamin Haggott Beckhart
Ronald Press, 1959
Buku Teks
Bank Bumi Daya
Bank Bumi Daya , 1982
Buku Teks
Graddy, Duane B., author
Prentice-Hall, 1990
Buku Teks
Graddy, Duane B., author
Prentice-Hall, 1990
Buku Teks
Bank Bumi Daya , 1984
Buku Teks