APA (7th ed.) Citation

Beale, S. J. (1938). Modern British gas practices. American Gas Association Monthly, 20, 438.

Chicago Style (17th ed.) Citation

Beale, S. J. "Modern British Gas Practices." American Gas Association Monthly 20 (1938): 438.

MLA (9th ed.) Citation

Beale, S. J. "Modern British Gas Practices." American Gas Association Monthly, vol. 20, 1938, p. 438.

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