Hansen, Alvin H. (Alvin Harvey), 1887-1975, author
George Allen and Unwin, 1944
Buku Teks
Cox, George, author
Thomson Learning, 2001
Buku Teks
Marc Buggeln, author
Cambridge University Press, 2017
eBooks
Hicks, Ursula K., author
Kinokuniya , 1959
Buku Teks
Rosen, Harvey S., author
McGraw-Hill, 2010
Buku Teks