edited by Martin Atzmueller
Springer-Verlag, 2012
eBooks
Goleman, Daniel, author
Bantam Books, 1995
Buku Teks
Rich, Elaine, author
Tata McGraw-Hill, 2009
Buku Teks
Piaget, Jean, author
Routledge Classics , 2001
Buku Teks
Guilford, Joy Paul, 1897-1987, author
McGraw-Hill, 1971
Buku Teks