Perroy, Edouard, 1901-1974, author
Presses Universitaires de France, 1961
Buku Teks
Hsu, Francis L.K., author
Holt, Rinehart and Winston, 1969
Buku Teks
edited by Rebecca M. Brown and Deborah S. Hutton
Blackwell, 2006
Buku Teks
Visser, H. F. E., author
De Spieghel Publishing, 1947
Buku Referensi
Dickinson, G. Lowes
George Allen & Unwin LTD, 1946
Buku Klasik