Gaya APA
Heimann, R.
(1989).
Amazing Mazes Mind Bending Mazes for age 6- 60
.
USA:
Watermill Press.
Gaya MLA
Heimann, Rolf.
"Amazing Mazes Mind Bending Mazes for age 6- 60".
USA:
Watermill Press,
1989.
Text.