APA Style
EYKEN, Willem Vander. (1973).
The pre-school years .
(S.L):
Penguin Books.
Chicago Style
EYKEN, Willem Vander.
The pre-school years.
(S.L):
Penguin Books,
1973.
Text.
MLA Style
EYKEN, Willem Vander.
The pre-school years.
(S.L):
Penguin Books,
1973.
Text.
Turabian Style
EYKEN, Willem Vander.
The pre-school years.
(S.L):
Penguin Books,
1973.
Print.