Lindauer, John, author
Saunders , 1977
Buku Teks
Internatioanl Macy Conference; edited by John Z. Bowers and Elizabeth F. Purcell
Josiah Macy. Jr. Foundation, 1978
Buku Teks
Murtagh, John, author
McGraw-Hill Education, 2013
Buku Teks
Young, Jeffrey E., author
Guilford Press, 2003
Buku Teks
Reeves, Tom Kynaston, author
McGraw-Hill, 1981
Buku Teks