Wegmann, Brenda
Random House, 1985
Buku Teks
Ferrer, Jami
Random House, 1985
Buku Teks
Ramelan P. Utojo, author
IKIP Semarang Press , 1990
Buku Teks
Dixson, Robert J., author
Regents Publishing, 1971
Buku Teks
Murray, Maggie, author
Oxford University Press, 1994
Buku Teks