Giulio Preti, editor; Jennifer Sardo Infirri, translator
Quintessence publishing, 2008
Buku Teks
Sarah A. Raskin, editor
Guilford Press, 2011
Buku Teks
Tjur, Tue, author
John Wiley & Sons, 1980
Buku Teks
Bergstrom, Harald, author
Academic Press, 1982
Buku Teks
Billingsley, Patrick, author
John Wiley & Sons, 1968
Buku Teks