Rau, Allan Francis
Libraire E.Droz, 1957
Buku Teks
Clark, Fred E., author
Macmillan, 1933
Buku Teks
Mayer, Thomas, author
Random House, 1968
Buku Teks
Wozniak, Chris A., editor
[, Springer], 2012
eBooks
Salant, Walter S., author
Brokkings Institute, 1961
Buku Teks