APA (7e ed.) Bronvermelding

RIBERA, G. (1979). Machine calculation for business and personal use.--Ed.2. Holden-Day.

Chicago (17e ed.) Bronvermelding

RIBERA, Gil. Machine Calculation for Business and Personal Use.--Ed.2. London: Holden-Day, 1979.

MLA (9e ed.) Bronvermelding

RIBERA, Gil. Machine Calculation for Business and Personal Use.--Ed.2. Holden-Day, 1979.

Let op: Deze citaties zijn niet altijd 100% accuraat.