Renshaw, Wallace W.
Gregg Publishing Company , 1937
Buku Teks
Diehl, Marcy Otis, author
Elsevier Saunders, 2012
Buku Teks
Wajnryb, Ruth
Oxford University Press , 1990
Buku Teks
Leslie, Louis A.
McGraw-Hill, 1955
Buku Teks
Sutjipto, author
Dana Karya, 1986
Buku Teks