Cita APA (7th ed.)
Baylis, D., Booth, G., & McDuell, B. (1998). GCSE science classbook. Letts.
Cita Chicago (17th ed.)
Baylis, David, Graham Booth, i Bob McDuell. GCSE Science Classbook. Italy: Letts, 1998.
Cita MLA (9th ed.)
Baylis, David, et al. GCSE Science Classbook. Letts, 1998.
Atenció: Aquestes cites poden no estar 100% correctes.