Capella, J., & Sapper, R. (1998). Richard Sapper: "I don't like explaining my work. Design speak for themselves" ; An Interview. Domus : Architettura Design Arte Comunicazione.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCapella, Juli, और Richard Sapper. "Richard Sapper: "I Don't like Explaining My Work. Design Speak for Themselves" ; An Interview." Domus : Architettura Design Arte Comunicazione 1998.
एमएलए (8वां संस्करण) प्रशस्ति पत्रCapella, Juli, और Richard Sapper. "Richard Sapper: "I Don't like Explaining My Work. Design Speak for Themselves" ; An Interview." Domus : Architettura Design Arte Comunicazione, 1998.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.