Roberts, L., & Lorena Roberts. (2001). Happy Street: Teacher's book. Oxford,New York: Oxford University Press.
استشهاد بنمط شيكاغوRoberts, Lorena, و Lorena Roberts. Happy Street: Teacher's Book. Oxford,New York: Oxford University Press, 2001.
MLA استشهادRoberts, Lorena, و Lorena Roberts. Happy Street: Teacher's Book. Oxford,New York: Oxford University Press, 2001.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.