Crouse, William H.
Vantage Art.Inc, 1984
Buku Teks SO
Crouse, William H.
McGraw-Hill Boook Company, 1956
Buku Teks SO
Nash, Frederick C
McGraw-Hill, 1985
Buku Teks SO
Belt, Forest H.
H. W. Sams , [1973]
Buku Teks
Wait, Donald
Angus & Robertson, 1971
Buku Teks SO