Rofes, Eric (2005). „The Handball Express, 975 Harrison Street“. A Walking Tour of South of Market in the 1970s(PDF). San Francisco. pp. 16–17. Suarchyvuotas originalas(PDF) October 31, 2014. Nuoroda tikrinta November 24, 2014.{{cite book}}: CS1 priežiūra: location missing publisher (link)
Rofes, Eric (2005). „The Handball Express, 975 Harrison Street“. A Walking Tour of South of Market in the 1970s(PDF). San Francisco. pp. 16–17. Suarchyvuotas originalas(PDF) October 31, 2014. Nuoroda tikrinta November 24, 2014.{{cite book}}: CS1 priežiūra: location missing publisher (link)