British Standards Institution. (1967). Compasses for use with pencils in schools. British Standards Institution.
Chicago-Zitierstil (17. Ausg.)British Standards Institution. Compasses for Use with Pencils in Schools. London: British Standards Institution, 1967.
MLA-Zitierstil (8. Ausg.)British Standards Institution. Compasses for Use with Pencils in Schools. British Standards Institution, 1967.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.