by Paul R. Ehrlich [and others]
W.W. Norton, 1984
Buku Teks
Clune, Lori, author
Oxford University Press, 2016
eBooks
St. Martin's Press, 1968
Buku Teks
edited by Andreas W. Daum, Lloyd C. Gardner, Wilfried Mausbach
Cambridge University Presss, 2003
Buku Teks
Fredericks, Pierce, author
E.P. Dutton, 1960
Buku Teks