editor, Walter Leifer
Max Hueber verlag, Muchen, 1964
Buku Teks
Stumpf, Samuel Enoch, 1918-1998, author
McGraw-Hill, 1971
Buku Teks
Mulvaney, Robert J., author
Essex Pearson, 2014
Buku Teks
editor, James A. Gould
Charles E. Merrill , 1971
Buku Teks
edited by John K. Ryan
The Catholic University of America Press, 1963
Buku Teks