JOHNSON, R. (1995). Ralph Johnson Of Perkins & Will Buildings And Projects Introduction By Robert Bruegman. Rizzolli International.
Čikaški stil citiranja (17. izdanje)JOHNSON, Ralph. Ralph Johnson Of Perkins & Will Buildings And Projects Introduction By Robert Bruegman. Rizzolli International, 1995.
MLA način citiranja (8. izdanje)JOHNSON, Ralph. Ralph Johnson Of Perkins & Will Buildings And Projects Introduction By Robert Bruegman. Rizzolli International, 1995.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.