(1970). Metric standards published and in progress: Supplement No 2 dated 30 November 1970 to the November 1969 edition of PD 6286. London: British Standards Institution.
Παραπομπή Chicago StyleMetric Standards Published and in Progress: Supplement No 2 Dated 30 November 1970 to the November 1969 Edition of PD 6286. London: British Standards Institution, 1970.
Παραπομπή MLAMetric Standards Published and in Progress: Supplement No 2 Dated 30 November 1970 to the November 1969 Edition of PD 6286. London: British Standards Institution, 1970.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.