Wang, Chang-ling
Kwang Lu Publishing Service, 1984
Buku Teks
Waung, W.S.K.
Heinemann Educational, 1971
Buku Teks
Schwartz, Harry, author
Atheneum, 1966
Buku Teks
Schwartz, Harry, author
Atheneum, 1966
Buku Teks
Schwartz, Harry, author
Atheneum, 1965
Buku Teks