Johansson, G. (2001). Environmental performance requirements in product development: An exploratory study of two development projects. Dept. of Mechanical Engineering, Linköpings universitet.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रJohansson, Glenn. Environmental Performance Requirements in Product Development: An Exploratory Study of Two Development Projects. Linköping: Dept. of Mechanical Engineering, Linköpings universitet, 2001.
एमएलए (8वां संस्करण) प्रशस्ति पत्रJohansson, Glenn. Environmental Performance Requirements in Product Development: An Exploratory Study of Two Development Projects. Dept. of Mechanical Engineering, Linköpings universitet, 2001.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.