Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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