Echols, John M., author
Bhratara, 1963
Buku Referensi
Stevens, Alan M., author
Ohio University Press, 2004
Buku Referensi
Echols, John M., author
Gramedia, 1980
Buku Referensi
Echols, John M., author
Gramedia, 1980
Buku Referensi
Gramedia Pustaka Utama, 2005
Buku Teks