edited by Roger Penn, Damon Berridge
Sage, 2013
Buku Teks
McCarthy, Philip J., author
McGraw-Hill, 1957
Buku Teks
Cohen, Lillian, author
Prentice-Hall, 1955
Buku Teks
Shavelson, Richard J., author
Allyn and Bacon , 1988
Buku Teks
edited by L. Andries van der Ark
Lawrence Erlbaum Associates, 2005
Buku Teks