Cita APA (7th ed.)

British Standards Institution. (1972). Specification for self-tapping screws and metallic drive screws (1st revision.). British Standards Institution.

Cita Chicago (17th ed.)

British Standards Institution. Specification for Self-tapping Screws and Metallic Drive Screws. 1st revision. London: British Standards Institution, 1972.

Cita MLA (8th ed.)

British Standards Institution. Specification for Self-tapping Screws and Metallic Drive Screws. 1st revision. British Standards Institution, 1972.