(1992). Golden Gate Business Association: GGBA ; Directory of Business and Professional Services.
Chicago-viite (17. p.)Golden Gate Business Association: GGBA ; Directory of Business and Professional Services. San Francisco, 1992.
MLA-viite (8. p.)Golden Gate Business Association: GGBA ; Directory of Business and Professional Services. 1992.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.