compiled by Herman C. Kemp
KITLV Press, 1998
Buku Referensi
Dobby, E.H.G. (Ernest Henry George), 1906-1981, author
University of London Press, 1950
Buku Teks
Dobby, E.H.G. (Ernest Henry George), 1906-1981, author
University of London Press, 1953
Buku Teks
Henderson, William, author
MIT Press, 1963
Buku Teks
Dobby, E.H.G. (Ernest Henry George), 1906-1981, author
University of London, 1950
Buku Teks