APA (7th ed.) Citation

Heeren, R. M. (1992). High gas-efficiency hydrogen negative ion sources.

Chicago Style (17th ed.) Citation

Heeren, Ronald M. High Gas-efficiency Hydrogen Negative Ion Sources. 1992.

MLA (9th ed.) Citation

Heeren, Ronald M. High Gas-efficiency Hydrogen Negative Ion Sources. 1992.

Warning: These citations may not always be 100% accurate.