Collins, James
The Bruce Publishing Company, 1954
Buku Teks
Castell, Alburey
Macmillan, 1959
Buku Teks
Scruton, Roger
Pantja SImpati , 1986
Buku Teks
University of Chicago Press, 1957
Buku Teks
edited by Dagobert D. Runes
Littlefield, Adams, 1962
Buku Teks