Dando, Sylvia, author
McGraw-Hill Book, 1987
Buku Referensi
Waite, Mitchell, author
McGraw-Hill, 1982
Buku Teks
Krieger, Morris
McGraw-Hill, 1985
Buku Teks
Shaw, Harry, author
McGraw-Hill, 1975
Buku Referensi
Flavell, Roger, author
Kyle Cathie, 1995
Buku Referensi