Mason, John Brown
Stanford University Press, 1946
Buku Teks
Meehan, Eugene J.
McGraw-Hill, 1966
Buku Teks
edited by Catherine S. Baxter
Lippincott, 1995
Buku Referensi
edited by Darla Haberer
William & Wilkins, 1997
Buku Referensi
William & Wilkins, 1997
Buku Referensi