Diamond, Solomon
Basic Book , 1959
Buku Teks
Hamburg, Morris, author
Harcourt Brace Jovanovich, Pub., 1991
Buku Teks
Universitas Indonesia, 2006
UI - Skripsi (Membership)
editor, Michael S. Lewis-Beck
Sage Publications, Toppan Publishing, 1993
Buku Referensi
Yudha Fernando, author
Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Indonesia, 2023
UI - Skripsi Membership