Thorpe, E., & Thorpe, S. (1999). Wheeler's Concise General Knowledge Digest. Wheeler Publishing.
استشهاد بنمط شيكاغوThorpe, Edgar, و Showick Thorpe. Wheeler's Concise General Knowledge Digest. New Delhi: Wheeler Publishing, 1999.
MLA استشهادThorpe, Edgar, و Showick Thorpe. Wheeler's Concise General Knowledge Digest. Wheeler Publishing, 1999.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.