Mills, Stephen
Penguin Books, 1986
Buku Teks
edited by Paul Boreham, Geoffrey Stokes and Richard Hall
Pearson-Longman, 2004
Buku Teks
Eulau, Heinz, author
Feffer and Simons, 1963
Buku Teks
editor by, Joyce Apsel, Amy Sodaro
Routledge, 2020
Buku Teks
Buku Teks