Sapsford, D., & Chen, J. (1998). Development economics and policy: The conference volume to celebrate the 85th birthday of Proffessor Sir Hans Singer. London: Macmillan.
استشهاد بنمط شيكاغوSapsford, David., and John-ren Chen. Development Economics and Policy: The Conference Volume to Celebrate the 85th Birthday of Proffessor Sir Hans Singer. London: Macmillan, 1998.
MLA استشهادSapsford, David., and John-ren Chen. Development Economics and Policy: The Conference Volume to Celebrate the 85th Birthday of Proffessor Sir Hans Singer. London: Macmillan, 1998.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.