APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (9e ed.) Bronvermelding

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