Johansson, G. (2001). Environmental performance requirements in product development: An exploratory study of two development projects. Dept. of Mechanical Engineering, Linköpings universitet.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Johansson, Glenn. Environmental Performance Requirements in Product Development: An Exploratory Study of Two Development Projects. Linköping: Dept. of Mechanical Engineering, Linköpings universitet, 2001.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Johansson, Glenn. Environmental Performance Requirements in Product Development: An Exploratory Study of Two Development Projects. Dept. of Mechanical Engineering, Linköpings universitet, 2001.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.