Demin, Oleg, author
CRC Press, Taylor & Francis Group, 2009
Buku Teks
Miller, Patricia H.
Worth Publishers, 2011
Buku Teks
Liebert, Robert M., 1942-, author
Prentice-Hall, 1986
Buku Teks
Hurlock, Elizabeth Bergner, 1898-, author
Tata McGraw-Hill, 1979
Buku Teks
Upton, Penney, author
Learning Matters, 2011
Buku Teks