Craven, John, 1949-, author
Blackwell, 1984
Buku Teks
Wonderling, David, author
Open University Press, 2005
Buku Teks
by Pauline Mulholland ... [et al.]
Pitman, 1983
Buku Teks
Ross, Robert C., author
McGraw-Hill, 1951
Buku Teks
Preiss, Julian, author
Routledge, 2013
Buku Teks