Mort, David
Gower Publishing Company, 1990
Buku Referensi
Mort, David
Gower Publishing Company, 1985
Buku Referensi
Gates, Jean Key, author
McGraw-Hill, 1994
Buku Referensi
Groeneveldt, W. P. (Willem Pieter), 1841-1915, author
Bhratara, 1960
Buku Teks
Groeneveldt, W. P. (Willem Pieter), 1841-1915, author
Bhratara, 1960
Buku Teks