Kolff-Buning, [date of publication not identified]
Buku Klasik
[publisher not identified], [date of publication not identified]
Naskah
[publisher not identified], [date of publication not identified]
Buku Klasik
Michael D. Brown
Ann Arbor Science Publishers, 1981
Buku Teks
Gillespie, Sheena, author
Allyn and Bacon , 1994
Buku Teks