APA

Heisel M., Schreiner B. & Bayerl W. (232009). Hydrogen, nitrogen assist compliance with new, tougher environmental regs. : .

Chicago

Heisel M, Schreiner B and Bayerl W. 232009. Hydrogen, nitrogen assist compliance with new, tougher environmental regs. : .

Harvard

Heisel M., Schreiner B. and Bayerl W. (232009). Hydrogen, nitrogen assist compliance with new, tougher environmental regs. : .

MLA

Heisel M, Schreiner B and Bayerl W. Hydrogen, nitrogen assist compliance with new, tougher environmental regs. : . 232009.