Cita APA (7th ed.)

White Roger, Hurley Derrick, & CORE-Materials. Brinell Hardness Test Machine.

Cita Chicago (17th ed.)

White Roger, Hurley Derrick, i CORE-Materials. Brinell Hardness Test Machine.

Cita MLA (9th ed.)

White Roger, et al. Brinell Hardness Test Machine.