@book{Witkowski:2017,
author
=
"K.Witkowski and S.Saniuk",
title
=
"Systemy logistyczne w gospodarowaniu, ISBN: 9788394467210",
publisher
=
"Uniwersytet Zielonogórski",
address
=
"Zielona Góra",
pages
=
"196",
year
=
"2017",
}