F. Bruckman, 1950
Buku Teks
edited by W. Gordon East and O.H.K. Spate
Methuen, 1950
Buku Teks SO
Juwono Sudarsono, author
Universitas Indonesia, 1980
Buku Teks
Sellman, Roger Raymond, author
Edward Arnold, 1954
Buku Referensi
East, W. Gordon, author
Methuen, 1950
Buku Teks