American Forest & Paper Association
American Society of Civil Engineers, 1996
Buku Referensi
Ochshorn, Jonathan, author
Elsevier, 2010
Buku Teks
Murakami, Haruki, 1949-, author
Civillizao, 2004
Buku Teks
Hutchinson, R.C., author
Farrar & Rinehart, 1940
Koleksi Publik
Hunt, George M., author
McGraw-Hill, 1967
Buku Teks