Linebarger, Paul Myron Anthony, 1913-1966, author
York D van Nostrand, 1954
Buku Teks
Wright, Vincent
New York Holmes [t.th.]
Buku Teks
Archipelago Press, 2006
Buku Referensi
Stephen J. Wayne [et all.]
Thomson, 2005
Buku Teks
Punnett, R.M., author
Dartmouth, 1994
Buku Teks