Spalding, K.J.
Basil Blackwell, 1931
Buku Teks SO
Jones, Margo
McGraw-Hill, 1965
Buku Teks SO
Artikel Jurnal
edited Harold J. Berman
A Vintage Book, 1961
Buku Teks
Mildred Friedman, editor ; with an essay by Michael Sorkin and commentaries by Frank O. Gehry and Associates
Rizzoli, 1999
Buku Teks SO