Shoemaker, Christopher C., author
Westview Press, 1991
Buku Teks
Yoswanda Yoga Wardana, author
2007
UI - Tesis Membership
edited by Jack Pinkowski
CRC Press, Taylor & Francis Group, 2008
Buku Referensi
Zahra Nuha Afifah Jouhari, author
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 2019
UI - Makalah dan Kertas Kerja
Barnet, Richard J., author
Simon and Schuster, 1981
Buku Teks