@article{Kruk:2015,
author
=
"M.Kruk",
title
=
"Practicing the English Present Simple Tense in Active Worlds",
journal
=
"International Journal of Computer-Assisted Language Learning and Teaching",
volume
=
"Vol. 5",
number
=
"Issue 4",
pages
=
"52--65",
year
=
"2015",
}