APA (7th ed.) Citation

Kingdon, C. F. (1929). Pursuit of accuracy in coal sampling. Gas Journal, 187, 356.

Chicago Style (17th ed.) Citation

Kingdon, C. F. "Pursuit of Accuracy in Coal Sampling." Gas Journal 187 (1929): 356.

MLA (9th ed.) Citation

Kingdon, C. F. "Pursuit of Accuracy in Coal Sampling." Gas Journal, vol. 187, 1929, p. 356.

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