Cavalier-Smith, T (2002). "The neomuran origin of archaebacteria, the negibacterial root of the universal tree and bacterial megaclassification". Int. J. Syst. Evol. Microbiol. 52 (Pt 1): 7–76. PMID11837318.
Hayes, John (April 29, 1999). "Methane-consuming archaebacteria in marine sediments". Nature (London). 398 (6730): 805.
Buku ilmiah
Boone DR; Whitman WB; Koga Y (2001). "Order III. Methanosarcinales ord. nov.". Dalam DR Boone; RW Castenholz (ed.). Bergey's Manual of Systematic Bacteriology Volume 1: The Archaea and the deeply branching and phototrophic Bacteria (Edisi 2nd). New York: Springer Verlag. hlm.169. ISBN978-0-387-98771-2.
Grant WD; Kamekura M; McGenity TJ; Ventosa A (2001). "Class III. Halobacteria class. nov.". Dalam DR Boone; RW Castenholz (ed.). Bergey's Manual of Systematic Bacteriology Volume 1: The Archaea and the deeply branching and phototrophic Bacteria (Edisi 2nd). New York: Springer Verlag. hlm.169. ISBN978-0-387-98771-2.
Garrity GM; Bell JA; Lilburn TG (2004). "Taxonomic Outline of the Prokaryotes". Bergey's Manual of Systematic Bacteriology, release 4.0 (Edisi 2nd). New York: Springer Verlag. doi:10.1007/bergeysoutline200310.
