APA Style
PONS, T, L. (1983).
An ecophysiological study in the field layer of ash coppice .
:
Drukkerijelinkwijk.
MLA Style
PONS, Thijs, Leendert.
"An ecophysiological study in the field layer of ash coppice".
:
Drukkerijelinkwijk,
1983.
Electronic resources.