Sereno, Kenneth K., author
Harper & Row, 1970
Buku Teks
Baran, Stanley J., author
Wadsworth and Cengage Learning, 2012
Buku Teks
Holmes, David, author
Sage, 2005
Buku Teks
Griffin, E.M., author
Mc Graw Hill, 2003
Buku Teks
Griffin, E.M., author
McGraw-Hill, 2012
Buku Teks