APA (7th ed.) Citation

Keyes, C. (1917). Parallelism of eastern and western interior coal fields. Coal Age (00099910), 12, 886.

Chicago Style (17th ed.) Citation

Keyes, C. "Parallelism of Eastern and Western Interior Coal Fields." Coal Age (00099910) 12 (1917): 886.

MLA (9th ed.) Citation

Keyes, C. "Parallelism of Eastern and Western Interior Coal Fields." Coal Age (00099910), vol. 12, 1917, p. 886.

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