Gaya APA
BERG, K., ERIKSSON, B, O.
(1980).
CHILDREN AND EXERCISE IX
.
BALTIMORE:
UNIVERSITY PARK PRESS.
Gaya MLA
BERG, KRISTINA., ERIKSSON, BENGT, O..
"CHILDREN AND EXERCISE IX".
BALTIMORE:
UNIVERSITY PARK PRESS,
1980.
Textbook.