[publisher not identified], [date of publication not identified]
Naskah
Richard D. Irwin. Inc, 1992
Buku Teks
International Society for Educational Information
ISEI, 1987
Buku Teks
[publisher not identified], [date of publication not identified]
Naskah
A. Samad Ahmad, author
Dewan Bahasa dan Pustaka , 1960
Buku Teks