APA (7e ed.) Bronvermelding

Institution, 8. B. S. Metre rules and rulers for school use.

Chicago (17e ed.) Bronvermelding

Institution, 8096 British Standards. Metre Rules and Rulers for School Use.

MLA (9e ed.) Bronvermelding

Institution, 8096 British Standards. Metre Rules and Rulers for School Use.

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