by Paul R. Ehrlich [and others]
W.W. Norton, 1984
Buku Teks
Baxter, John, 1939-
Harper Perennia, 2015
Buku Teks SO
Jemima Alma Sabila
Fakultas Ilmu Pengetahuan Budaya Universitas Indonesia, 2021
UI - Tugas Akhir
Shimazaki, Toson
University of Hawaii Press, 1987
Buku Teks SO
Lewis, C.S.
Gramedia Pustaka Utama, 2006
Buku Teks