Weinstein, Bob
Money hang-ups
John Wiley & Sons, 1982
Buku Teks
Sharer, Robert J.
Archaeology: discovering our past
McGraw-Hill, 2003
Buku Teks
Zachariadis, Theodoros I., editor
Cars and carbon : automobiles and European climate policy in a global context
Springer, 2012
eBooks
Bonner, Thomas Neville
Our recent past : American civilization in the twentieth century
Prentice-Hall, 1963
Buku Teks
Mark S. Ashton, editor
Managing forest carbon in a changing climate
Springer, 2012
eBooks