Morton, Frederick
Atheneum, 1962
Buku Teks
Morton, Frederic
Atheneum, 1962
Buku Teks
Manchester, William, author
Little, Brown, 1959
Buku Teks
Rina, author
Fakultas Psikologi Universitas Indonesia, 2007
UI - Tesis Membership
Galvin, Kathleen M.
Scott, Foresman and Company , 1982
Buku Teks