Alexander, L.G., author
Longman, 1964
Buku Teks
Alexander, L.G., author
Longman, 1985, 1992
Buku Teks
Alexander, L.G., author
Longman, 1967
Buku Teks
McKeague, Charles P., 1946-, author
Brooks/Cole Cengage Learning, 2012
Buku Teks
McKeague, Charles, 1946-, author
Brooks/Cole Cengage Learning, 2012
Buku Teks