Archer, J. S.
Graham & Trotman, 1986
Buku Teks
Zaba, Joseph
Gulf Pub. Co, 1970
Buku Referensi
Berger, Bill D.
Penn Well Books , 1978
Buku Teks
Craft, B. C. (Benjamin Cole)
Prentice-Hall, 1991
Buku Teks
Craft, B. C. (Benjamin Cole)
Prentice-Hall, 1959
Buku Teks