Cita APA (7th ed.)

Engel, A. S. (2015). Microbial life of cave systems. De Gruyter.

Cita Chicago (17th ed.)

Engel, Annette Summers. Microbial Life of Cave Systems. Berlin, Germany ; Boston, [Massachusetts]: De Gruyter, 2015.

Cita MLA (9th ed.)

Engel, Annette Summers. Microbial Life of Cave Systems. De Gruyter, 2015.