Clark, John
Blackwell, 1995
Buku Teks SO
Rusdi Noor Rosa
Rajawali Pers, 2021
Buku Teks
Trask, R.L.
Routledge, 1996
Buku Referensi
Soenjono Dardjowidjojo, 1938-
Yayasan Pustaka Obor Indonesia, 2009
Buku Teks SO
Roach, Peter (Peter John)
Cambridge University Press, 1983
Buku Teks SO