White, Paul A.
Dickenson, 1970
Buku Teks
Tan, S.T.
PWS Publishing Company, 1994
Buku Teks
Brixey, John C.
Holt, Rinehart and winston, 1954
Buku Teks
Brixey, John C.
Holt, Rinehart and winston, 1954
Buku Teks
Shockley, James E.
Holt, Rinehart and Winston , 1976
Buku Teks