Austin, Michael J.
Human Science Press, 1978
Buku Teks
F.E. Peacock Publishers, Ind., 1972
Buku Teks
F.E. Peacock Publishing, Inc., 1977
Buku Teks
Zastrow, Charles, author
Brooks/Cole, 1996
Buku Teks
O`Hara, Agi, author
Oxford University Press, 2014
Buku Teks