APA (7e ed.) Bronvermelding

Institution, 8. B. S. (1990). Cross recesses for screws. London : British Standards Institution.

Chicago (17e ed.) Bronvermelding

Institution, 8096 British Standards. Cross Recesses for Screws. London : British Standards Institution, 1990.

MLA (9e ed.) Bronvermelding

Institution, 8096 British Standards. Cross Recesses for Screws. London : British Standards Institution, 1990.

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