Salmen, L. F. (1987). Listen to the people: Participant-observer evaluation of development projects. Published for the World Bank by Oxford University Press.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Salmen, Lawrence F. Listen to the People: Participant-observer Evaluation of Development Projects. New York: Published for the World Bank by Oxford University Press, 1987.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Salmen, Lawrence F. Listen to the People: Participant-observer Evaluation of Development Projects. Published for the World Bank by Oxford University Press, 1987.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.