Gaya APA

Pritchard, R., Guy, J. (1977). Handbook of Industrial Gas Utilization: Engineering Principles and Practice . New York: Van Nostrand Reinhold Company.

Gaya MLA

Pritchard, R.., Guy, J.J. "Handbook of Industrial Gas Utilization: Engineering Principles and Practice". New York: Van Nostrand Reinhold Company, 1977. Text.