Holtom, Daniel Clarence, 1884-1962
Paragon, 1963
Buku Teks
Ruth Wodak, Majid Khosravinik, Brigite Mral
Bloomsbury Publishing, 2013
Buku Teks
Al Wasi’ilah Atini Arum
Fakultas Psikologi Universitas Indonesia, 2021
UI - Skripsi (Membership)
Storry, Richard, 1913-1982
Greenwood Press,, 1957
Buku Teks
Fakultas Psikologi Universitas Indonesia, 2004
UI - Tesis (Membership)