APA Style
AHLBERG, Allan. (2009).
The pencil .
London:
Walker Books.
Chicago Style
AHLBERG, Allan.
The pencil.
London:
Walker Books,
2009.
Text.
MLA Style
AHLBERG, Allan.
The pencil.
London:
Walker Books,
2009.
Text.
Turabian Style
AHLBERG, Allan.
The pencil.
London:
Walker Books,
2009.
Print.