Lua APA (7ú heag.)
Engel, A. S. (2015). Microbial life of cave systems. De Gruyter.
Lua i Stíl Chicago (17ú heag.)
Engel, Annette Summers. Microbial Life of Cave Systems. Berlin, Germany ; Boston, [Massachusetts]: De Gruyter, 2015.
Lua MLA (9ú heag.)
Engel, Annette Summers. Microbial Life of Cave Systems. De Gruyter, 2015.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.