Brown, Neville, author
Pan Books, 1970
Buku Teks
Spencer, Frank, author
Pan Books, 1967
Buku Teks
Watt, D.C., author
Pan Books, 1967
Buku Teks
Trident Press, [Date of publication not identified]
Buku Referensi
Lester R. Brown ... [et al.]; penerjemah, Hermoyo
Yayasan Obor Indonesia, 1995
Buku Teks