Ohkawa, Kazushi
Stanford University Press, 1973
Buku Teks
Boehm, E.A.
Longman, 1971
Buku Teks
Boehm, E.A.
Longman Chesire, 1979
Buku Teks
Datta, Bhabatosh
Tata McGraw-Hill, 1978
Buku Teks
Fowler, Edward
University of California Press,, 1988
Buku Teks