Citazione Stile APA (7a Edizione)

Russel, K., & Carter, P. (1999). Classic Conundrums: Fiendish puzzles from the 19th Century. Barners & Noble Inc.

Citazione stile Chigago Style (17a edizione)

Russel, Kenneth, e Philip Carter. Classic Conundrums: Fiendish Puzzles from the 19th Century. New York: Barners & Noble Inc, 1999.

Citatione MLA (9a ed.)

Russel, Kenneth, e Philip Carter. Classic Conundrums: Fiendish Puzzles from the 19th Century. Barners & Noble Inc, 1999.