Srivastava, S.K., author
S. Chand, 1964
Buku Teks
Searles, William H., author
John Wiley & Sons, 1949
Buku Referensi
Habermas, Jurgen, author
Heinemann, 1974
Buku Teks
Waldman, Don E., author
Pearson, 2007
Buku Teks
Lachman, Leon, author
Lea & Febiger, 1976
Buku Teks