Παραπομπή σε μορφή APA (7η εκδ.)

(1988). Holocene and modern ground failure in Fremont Valley, and migration of Koehn take Shoreline, 1943-1977 / [peta]. Boulder, Co : Geological Society of America.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Holocene and Modern Ground Failure in Fremont Valley, and Migration of Koehn Take Shoreline, 1943-1977 / [peta]. Boulder, Co : Geological Society of America, 1988.

Παραπομπή σε μορφή MLA (9th εκδ.)

Holocene and Modern Ground Failure in Fremont Valley, and Migration of Koehn Take Shoreline, 1943-1977 / [peta]. Boulder, Co : Geological Society of America, 1988.