Armstrong, Bruce K., author
Oxford University Press, 1994
Buku Referensi
Armstrong, Bruce K., author
Oxford University Press, 1994
Buku Teks
MacMahon, Brian, author
Little, Brown and Company, 1970
Buku Teks
Merrill, Ray M., author
Jones & Bartlett Learning, 2016
Buku Teks
Merrill, Ray M., author
Jones and Bartlett Learning , 2011
Buku Teks