Whitehead, Randall
Rockport, 1995
Buku Teks
Annisa Kusumawardani
Fakultas Teknik Universitas Indonesia, 2017
UI - Skripsi (Membership)
Trulove, James Grayson
Massachusetts Rockport Publishers 2000,
Buku Referensi
Deazaskia Prihutami
2008
UI - Skripsi (Open)
Copson, E.T.
Cambridge University Press, 1968
Buku Teks