APA (7th ed.) Citation

Ullmann, O., Gretz, J., Drolet, B., Kluyskens, D., & Sandmann, F. (1994). Status of the Hydro-Hydrogen Pilot Project (EQHHPP). International Journal of Hydrogen Energy, 19(2), 169.

Chicago Style (17th ed.) Citation

Ullmann, O., J. Gretz, B. Drolet, D. Kluyskens, and F. Sandmann. "Status of the Hydro-Hydrogen Pilot Project (EQHHPP)." International Journal of Hydrogen Energy 19, no. 2 (1994): 169.

MLA (9th ed.) Citation

Ullmann, O., et al. "Status of the Hydro-Hydrogen Pilot Project (EQHHPP)." International Journal of Hydrogen Energy, vol. 19, no. 2, 1994, p. 169.