Impact Books, 1993
Buku Referensi
Shandong Jiaoyu Chubanshe, 1999
Buku Referensi
Rayner Hardjono, author
Gramedia Pustaka Utama, 2000
Buku Teks
Laurence Urdang, editor in chief
Gale Research Company, 1983
Buku Referensi
Laurence Urdang, editor in chief
Gale Research Company, 1983
Buku Referensi