Stumpf, Samuel Enoch, 1918-1998
McGraw-Hill, 2012
Buku Teks
Christensen, Kit R.
McGraw-Hill, 2002
Buku Teks
Gyula Klima, Fritz Allhoff, Anand Vaidya
BlackWell Publishing, 2007
Buku Teks
Stumpf, Samuel Enoch, 1918-1998
McGraw-Hill, 1971
Buku Teks
edited by A.P. Martinich
Blackwell, 2007
Buku Teks