Unterberger, Richie (2003). Eight Miles High: Folk-rock's Flight from Haight-Ashbury to Woodstock. Backbeat Books. p. 64. ISBN 978-0-87930-743-1. https://books
Unterberger, Richie (2003). Eight Miles High: Folk-rock's Flight from Haight-Ashbury to Woodstock. Backbeat Books. p. 64. ISBN 978-0-87930-743-1. https://books
(1988年10月13日). “Haight-Ashbury Journal; Love and Hate Linger In Ex-Hippie District”. New York Times. http://www.nytimes.com/1988/10/13/us/haight-ashbury
Unterberger, Richie (2003). Eight Miles High: Folk-rock's Flight from Haight-Ashbury to Woodstock. Backbeat Books. pp. 39–. ISBN 978-0-87930-743-1. https://archive