Hardisty, David
Oxford Oxford University Press 1989
Buku Teks
Hardisty, David
Oxford University Press, 1989
Buku Teks SO
Murdock, George Peter
McGraw-Hill, 1959
Buku Teks
Murdock, George Peter
McGraw-Hill, 1959
Buku Teks
edited by Phillis M. Martin and Patrick O'Meara
Indiana University Press, 1995
Buku Teks SO