APA (7e ed.) Bronvermelding

Não informado. (2001). Rubber Statistical Bulletin. International Rubber Study Group.

Chicago (17e ed.) Bronvermelding

Não informado. Rubber Statistical Bulletin. London: International Rubber Study Group, 2001.

MLA (8e ed.) Bronvermelding

Não informado. Rubber Statistical Bulletin. International Rubber Study Group, 2001.

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