Lobell, John
Shambhala, 2000
Buku Teks
Adi Jaya Rizkiawan, author
Fakultas Teknik Universitas Indonesia, 2013
UI - Skripsi (Membership)
Turner, Janet, author
B.T. Batsford, 1994
Buku Referensi
Kornai, Jones, author
Oxford University Press , 1959
Buku Teks
Lumintang, Pricilia Merry Nancy, author
Fakultas Teknik Universitas Indonesia, 2008
UI - Skripsi (Open)