Drooyan, Irving, author
John Wiley & Sons, 1976
Buku Teks
Leithold, Louis, author
Macmillan, 1974
Buku Teks
Dolciani, Mary P., author
Houghton Miffiln, 1971
Buku Teks
Dolciani, Mary P., author
Houghton Mifflin, 1971
Buku Teks
Leithold, Louis, author
Macmillan, 1975
Buku Teks