by Elmer R. Noble ... [and others]
Lea & Febiger, 1989
Buku Referensi
Craig, Charles Franklin, author
Lea & Febiger, 1951
Buku Teks
Roberts, Larry S.
McGraw-Hill, 2000
Buku Teks
Chandler, Asa C.
John Wiley & Sons, 1961
Buku Teks
Noble, Elmer R., author
Lea & Febiger, 1961
Buku Teks