Citing an online oral history interview:

Transcript, "It Became My Case Study": Michael Cowan's Four Decades at UC Santa Cruz, Interviewed by Irene Reti page 27, (Regional History Project, UCSC Library. Online: http://library.ucsc.edu/reg-hist/it-became-my-case-study-professor-michael-cowans-four-decades-at-uc-santa-cruz
(Accessed June 13, 2013).

Bibliographic citation for a single interview:

Reti, Irene., "It Became My Case Study": Michael Cowan's Four Decades at UC Santa Cruz, transcript of an oral history conducted 2012 by Irene Reti, Regional History Project, UC Santa Cruz Library, University of California, Santa Cruz, 2013, 458 pp.

Footnote citation for a single interview:

Irene Reti, "It Became My Case Study": Michael Cowan's Four Decades at UC Santa Cruz, transcript of an oral history conducted 2012 by Irene Reti, Regional History Project, UC Santa Cruz Library, University of California, Santa Cruz, 2013, pp 10-11.

Bibliographic citation for one interview in a multi-volume oral history:

Laird, John,  transcript of an oral history conducted 2001, in Out in the Redwoods: Gay, Lesbian, Bisexual, Transgender History at UC Santa Cruz, 1965 - 2003, Regional History Project, UC Santa Cruz Library, University of California, Santa Cruz, 2004.

Footnote citation for one interview in a multi-volume oral history:

John Laird, Transcript of an oral history conducted 2001, in Out in the Redwoods: Gay, Lesbian, Bisexual, Transgender History at UC Santa Cruz, 1965 - 2003, Regional History Project, UC Santa Cruz Library, University of California, Santa Cruz, 2004, pp.148-149.