Winter, Richard
London: The Falmer Press, 1996
Buku Teks
Talitha Ardelia Syifa Rabbani, author
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 2021
UI - Tesis (Membership)
Meyer, Marissa, author
Spring, 2016
Buku Teks
Smith, Mable H., author
Lippincott Wiliams & Wilkins, 2005
Buku Teks
Appelquist, Claes G.
Paris Organization for Economic Co-Operation and Development 1974,
Buku Teks