Caldwell, Wallace Everett, author
Holt, Rinehrt and Winston, 1963
Buku Teks
Matthews, Rupert, author
Miles Kelly, 2007
Buku Teks
McGaw-Hill, 2012
Multimedia
Pfeiffer, Paul E., author
McGraw-Hill, 1964
Buku Teks
Graeme Aplin, S.G. Foster, Michael McKernan, editor
Fairfax, Syme & Weldon Associates, 1987
Buku Referensi