Lewis, Edward E.
Houghton Mifflin , 1963
Buku Teks
Edwards, Allen L., author
Rinehart and Winston , 1958
Buku Teks
Stanford Univ. Press ., 1961
Buku Teks
Hardle, Wolfgang Karl, author
Springer , 2012
eBooks
Kazmier, Leonard J., author
McGraw-Hill, 1967
Buku Teks