Cooper, Donald R., author
McGraw-Hill, 2008
Buku Teks
Cooper, Donald R., author
McGraw-Hill, 2008
Buku Teks
Jorgensen, Marianne
Sage, 2002
Buku Teks
Milroy, Lesley, author
Blackwell, 2003
Buku Teks
Grant, John C. Boileau, author
The williams & Wilkins , 1965
Buku Teks