Newall, Christopher
Phaidon, c1987
Buku Teks SO
edited by E.K. Brown
Thomas Nelson and Sons, 1942
Buku Teks SO
Simmons, Jack
Thames and Hudson, 1991
Buku Teks SO
edited by Patrick Brantlinger and William B. Thesing
Blackwell, 2002
Buku Referensi
edited by William Frost
Prentice-Hall, 1952
Buku Teks SO