Cotterill, Rodney
Cambridge University Press, 1989
Buku Referensi
Smith, Patricia L.
Society for Industrial and Applied Mathematics, 2001
eBooks
Lapp, Ralph E.
Time Incorporated, 1963
Buku Teks
Lapp, Ralph E.
Time Incorporated, 1963
Buku Referensi
Reid, Robert C.
McGraw-Hill, 1977
Buku Teks