(1976). Chess informat. [s.n.].
Chicago Style aipamenaChess Informat. Beograd: [s.n.], 1976.
MLA aipamenaChess Informat. [s.n.], 1976.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.
APA aipamena
(1976). Chess informat. [s.n.].
Chicago Style aipamenaChess Informat. Beograd: [s.n.], 1976.
MLA aipamenaChess Informat. [s.n.], 1976.