Donaldson, Thomas
Oxford University Press, 1989
Buku Teks
Carroll, Archie B.
Thomson , 2003
Buku Teks
Lawrence, Anne T.
McGraw-Hill, 2005
Buku Teks
Lawrence, Anne T.
McGraw-Hill Education, 2017
Buku Teks
Davis, Keith, 1918-
McGraw-Hill, 1984
Buku Teks