Greenland, David
Charles E. Merrill, 1983
Buku Teks
Mouzon, Olin T.
Appleton-Century-Crofts, 1966
Buku Teks
Landsberg, Hans H.
The Johns Hopkins Press , 1963
Buku Teks
Coyle, David Cushman, 1887-1969
Rutgers UNiversity Press, 1957
Buku Teks
Kreps, Juanita M.
Wilson, 1955
Buku Teks