Cita APA (7th ed.)

Hazlehurst, J. (2009). Tolley's industrial and commercial gas installation practice (5th ed.). Elsevier/Newnes.

Cita Chicago (17th ed.)

Hazlehurst, John. Tolley's Industrial and Commercial Gas Installation Practice. 5th ed. Burlington, MA: Elsevier/Newnes, 2009.

Cita MLA (9th ed.)

Hazlehurst, John. Tolley's Industrial and Commercial Gas Installation Practice. 5th ed. Elsevier/Newnes, 2009.