APA (7th ed.) Citation

WALLS, W. (1986). Liquefied petroleum gases handbook. National fire protection association.

Chicago Style (17th ed.) Citation

WALLS, Willbur. Liquefied Petroleum Gases Handbook. National fire protection association, 1986.

MLA (8th ed.) Citation

WALLS, Willbur. Liquefied Petroleum Gases Handbook. National fire protection association, 1986.

Warning: These citations may not always be 100% accurate.