Kohan, Anthony Lawrence., author
McGraw-Hill, 1995
Buku Referensi
Rosaler, Robert C.
McGraw-Hill, 2002
Buku Referensi
Robert Rosaler, editor
McGraw-Hill, 2002
Buku Referensi
Rosaler, Robert C.
McGraw-Hill, 1995
Buku Referensi
Westcott, Cynthia, author
D. Van Nostrand, 1955
Buku Referensi