Humphrey, E. (1975). Encyclopedia International: V.6.: Diatom - Explosion. Grolier Inc.
Chicago Style (17th ed.) CitationHumphrey, Edward. Encyclopedia International: V.6.: Diatom - Explosion. Grolier Inc, 1975.
MLA (8th ed.) CitationHumphrey, Edward. Encyclopedia International: V.6.: Diatom - Explosion. Grolier Inc, 1975.
Advarsel: Disse citationer er muligvist ikke 100% nøjagtige.