Paul H. Elwood, Jeremy B. Albertus, editor
Nova Science Publisher, 2008
Buku Teks
Walter Lorenz and Ian Shaw, editors
Routledge, Taylor & Francis Group, 2017
Buku Teks
Meir, Gerald M., author
Oxford University Press, 1971
Buku Teks
Meier, Gerald M., author
Oxford University Press, 1970
Buku Teks
editor, Theodor Rathgeber
Pustaka Sinar Harapan, 2006
Buku Teks