Ypma, Herbert, author
Thames & Hudson, 2000
Buku Referensi
Fawcett, Joe, author
John Wiley & Sons, 2012
Buku Teks
Riley, David D., author
Boyd & Fraser, 1987
Buku Teks
Emerson, Rupert, author
Harvard Univ. Press, 1960
Buku Teks
Ypma, Herbert, author
Thames & Hudson, 1999
Buku Referensi