APA (7th ed.) Citation

Root, D. H. (1978). Take stock of future energy sources. Hydrocarbon Processing, 57, 193.

Chicago Style (17th ed.) Citation

Root, D. H. "Take Stock of Future Energy Sources." Hydrocarbon Processing 57 (1978): 193.

MLA (9th ed.) Citation

Root, D. H. "Take Stock of Future Energy Sources." Hydrocarbon Processing, vol. 57, 1978, p. 193.

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