Blalock, Hubert M., author
McGraw-Hill , 1981
Buku Teks
Blalock, Hubert M., author
McGraw-Hill, 1972
Buku Teks
Samuel, Myra L., author
Prentice Hall; Pearson education, 2003
Multimedia
Schork, M. Anthony, author
Prentice-Hall, 2000
Buku Teks
Dunn, Olive Jean, author
John Wiley & Sons, 1977
Buku Teks