Cita APA (7a ed.)
(1991). Everyday English. Warning up. Everyday English. EAST Publishing, a.s..
Cita Chicago Style (17a ed.)
Everyday English. Warning Up. Everyday English. (neuvedené): EAST Publishing, a.s., 1991.
Cita MLA (9a ed.)
Everyday English. Warning Up. Everyday English. EAST Publishing, a.s., 1991.
Precaución: Estas citas no son 100% exactas.