Gaya APA

Lewis, C, D, (, D. (1982). Industrial and business forecasting methods (143 p. : ill. ; 22 cm.). London ; Boston: Butterworth Scientific.

Gaya MLA

Lewis, C., D., (Colin, David). "Industrial and business forecasting methods". 143 p. : ill. ; 22 cm. London ; Boston: Butterworth Scientific, 1982. Buku.