APA (7th ed.) Citation

Wollnik, H. (1999). MASS SPECTROMETERS. Encyclopedia of Electrical & Electronics Engineering, 12, 403.

Chicago Style (17th ed.) Citation

Wollnik, Hermann. "MASS SPECTROMETERS." Encyclopedia of Electrical & Electronics Engineering 12 (1999): 403.

MLA (9th ed.) Citation

Wollnik, Hermann. "MASS SPECTROMETERS." Encyclopedia of Electrical & Electronics Engineering, vol. 12, 1999, p. 403.

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