editor, Dorothy M. Stewart
Elex Media Komputindo, 1993
Buku Teks
Boy Subirosa Sabarguna, author
UI-Press, 2009
Buku Teks
Strauss, George, author
Pustaka Binaman Pressindo, 1986
Buku Teks
Dale, Margaret, author
Gramedia, 2003
Buku Teks
Manullang, M., author
Aksara Baru , 1974
Buku Teks