@book{Maćkowiak:2004,
author
=
"K.Maćkowiak and C.Piątkowski and D.Szagun",
title
=
"Język polski, ISBN: 8389712",
publisher
=
"Oficyna Wydaw. Uniwersytetu Zielonogórskiego",
address
=
"Zielona Góra",
pages
=
"294",
year
=
"2004",
}