Schmidt, Arno, author
Van Nostrand Reinhold, 1990
Buku Teks
Schmidt, Dana Adam
Rinehart and winston,, 1968
Buku Teks
Roberts, Larry S., 1935-, author
McGraw-Hill, 2013
Buku Teks
Spohr, Kristina, author
Oxford University Press, 2016
eBooks
Salomons, Annie, author
Bert Bakker, 1968
Buku Teks