APA (7th ed.) Citation

Ruscic, B., Schwarz, M., & Berkowitz, J. (1990). Photoionization studies of GeHn (n=2–4). American Institute of Physics (AIP).

Chicago Style (17th ed.) Citation

Ruscic, B., M. Schwarz, and J. Berkowitz. Photoionization Studies of GeHn (n=2–4). College Park, Md: American Institute of Physics (AIP), 1990.

MLA (9th ed.) Citation

Ruscic, B., et al. Photoionization Studies of GeHn (n=2–4). American Institute of Physics (AIP), 1990.