-. Encyclopedia of Science and Technology, Volume 2, E to H. Crest Publising House.
Chicago Style (17th ed.) Citation-. Encyclopedia of Science and Technology, Volume 2, E to H. Crest Publising House.
MLA (8th ed.) Citation-. Encyclopedia of Science and Technology, Volume 2, E to H. Crest Publising House.
Warning: These citations may not always be 100% accurate.