Lambert, A. Vickie
Prentice Hall Englewood Cliffts , 1985
Buku Teks
Bittel, Lester Robert
McGraw-Hill, 1968
Buku Teks
Bittel, Lester Robert
Tata McGraw-Hill, 1974
Buku Teks
Kishore, Swapna
Tata McGraw-Hill, 1991
Buku Teks
Putnam, Mabel Raef
Charles Scribner's, 1954
Buku Teks