Smuul, Juhan
Foreign Languages Publishing House, 1957
Buku Teks SO
Grattan, C. Hartley
University of Michigan Press, 1963
Buku Teks SO
Wattimena, Reza Alexander Antonuis, 1983-
Ary Suta Center, 2020
Artikel Jurnal
Howkins, Adrian
Oxford University Press, 2017
eBooks
Eastman, Joseph T.
Academic Press, 1993
Buku Teks SO