Dawe, Bruce
Cheshire Publishing, 1971, c. 1973
Buku Teks SO
Kunitz, Stanley J.
Little, Brown, 1958
Buku Teks
Tranter, John
Hale & Iremonger, 1982
Buku Teks SO
Ambiya Ikrami Adji
2016
UI - Makalah dan Kertas Kerja
Wheeler, Ella
A Wico Book, 2015
Buku Teks SO