Locker, Kitty O., author
McGraw-Hill, 2009
Buku Teks
Morrissey, Jean, author
McGraw-Hill, 2011
Buku Teks
Sully, Philippa
Mosby Elsevier, 2010
Buku Teks
Wikrama Iryans Abidin, author
General Secretariat of the House of Representatives of the Republic of Indonesia and United Nations Development Programme, 2009
Buku Referensi
Devito, Joseph A., author
Harper and Row, 1990
Buku Teks