APA (7th ed.) Citation

Wehrman, L. A. (1997). Single and double ionization of helium within the independent event model. [publisher not identified].

Chicago Style (17th ed.) Citation

Wehrman, Laurence Allan. Single and Double Ionization of Helium Within the Independent Event Model. [Place of publication not identified]: [publisher not identified], 1997.

MLA (9th ed.) Citation

Wehrman, Laurence Allan. Single and Double Ionization of Helium Within the Independent Event Model. [publisher not identified], 1997.