Gaya APA

WILLIAMSON, R, E., TROTTER, H, F. (1979). Multivariable Mathematics Linear Algebra Calculus Differential Equations (2nd. ed.). Hoboken, NJ: Apress.

Gaya MLA

WILLIAMSON, Richard, E.., TROTTER, Hale, F.. "Multivariable Mathematics Linear Algebra Calculus Differential Equations". 2nd. ed. Hoboken, NJ: Apress, 1979. .