APA (7th ed.) Citation

Hamak, J. E., & Sigler, S. (1990). Analyses of natural gases, 1989. U.S. Dept. of the Interior, Bureau of Mines.

Chicago Style (17th ed.) Citation

Hamak, John E., and Stella Sigler. Analyses of Natural Gases, 1989. Washington, D.C.: U.S. Dept. of the Interior, Bureau of Mines, 1990.

MLA (9th ed.) Citation

Hamak, John E., and Stella Sigler. Analyses of Natural Gases, 1989. U.S. Dept. of the Interior, Bureau of Mines, 1990.