APA-referens

Shklarsky, D. O., Chentzov, N., & Yaglom, I. (1993). USSR Olympiad prblem book: Selected problems and theorms of elementary mathematics. Dover.

Chicago-stil citat

Shklarsky, D. O., N.N Chentzov, och I.M Yaglom. USSR Olympiad Prblem Book: Selected Problems and Theorms of Elementary Mathematics. New york: Dover, 1993.

MLA-referens

Shklarsky, D. O., et al. USSR Olympiad Prblem Book: Selected Problems and Theorms of Elementary Mathematics. Dover, 1993.