(1989). The Chess problem: Containing four hundred positions (Rev. ed.). Tynron Press.
Cita Chicago Style (17a ed.)The Chess Problem: Containing Four Hundred Positions. Rev. ed. Scotland: Tynron Press, 1989.
Cita MLA (9a ed.)The Chess Problem: Containing Four Hundred Positions. Rev. ed. Tynron Press, 1989.
Precaución: Estas citas no son 100% exactas.