Erickson, Bonnie H., author
LP3ES, 1983
Buku Teks
Erickson, Bonnie H., author
LP3ES, 1977
Buku Teks
Zanten, Wim van, author
Gramedia Pustaka Utama, 1982
Buku Teks
Zanten, Wim van, author
Gramedia, 1982
Buku Teks
Erickson, Bonnie H., author
LP3 ES, 1981
Buku Teks