Cita APA (7a ed.)

Brockington, J., & Stamper, P. (1981). Technician chemistry: Level 1. Longman.

Cita Chicago Style (17a ed.)

Brockington, John, y Peter Stamper. Technician Chemistry: Level 1. London [etc.] k: Longman, 1981.

Cita MLA (9a ed.)

Brockington, John, y Peter Stamper. Technician Chemistry: Level 1. Longman, 1981.