Science Education and Biology, Boston University Two Silber Way, Boston, MA 02215 U.S.A.
Bibliografia
DUVAL B, and MARGULIS L. 1995. The microbial community of Ophrydium versatile colonies – endosymbionts, residents,and tenants. Symbiosis 18: 181–210.
HUMBOLDT A von. 1852. Personal Narrative of Travels to the Equinoctial Regions of American During the Years1799–1803. Henry G. Bohn Publishers, London.[Translated and edited by Thomasina Ross].
SCHWARTZ RM, and DAYHOFF MO. 1978. The origin of prokaryotes, eukaryotes, mitochondria, and chloroplasts.Science 199: 395–403.
ZOOK D. 1994. Microcosmos Curriculum Guide to Exploring Microbial Space. Kendall-Hunt Publishers, Iowa.