Cole, Fay-Cooper, author
D. Van Nostrand, 1945
Buku Teks
King, Victor T., author
Blackwell, 1993
Buku Teks
King, Victor T., author
Blackwell, 1993
Buku Teks
Hoang. Van Chi
Allied Publishers, 1964
Buku Teks
Brandt, Conrad, author
George Allen and Unwin, 1959
Buku Teks