APA (7th ed.) Citation

Johnstone, W. D. (1996). NTC's encyclopedia of international weights & measures. NTC Pub. Group.

Chicago Style (17th ed.) Citation

Johnstone, William D. NTC's Encyclopedia of International Weights & Measures. Lincolnwood, Ill: NTC Pub. Group, 1996.

MLA (9th ed.) Citation

Johnstone, William D. NTC's Encyclopedia of International Weights & Measures. NTC Pub. Group, 1996.

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