Smith, Anthony D., author
Longman, 1976
Buku Teks
Smith, Anthony D., author
Longman, 1976
Buku Teks
Collins, Barry E., author
John Wiley & Sons, 1964
Buku Teks
Zaltman, Gerald, author
Robert E. Krieger Publ., 1983
Buku Teks
edited by Frances Christie and J. R. Martin
Continuum, 2000
Buku Teks