APA aipamena

ERIKSEN, A. (1985). Playground Design. Van Nostrand Reinhold.

Chicago Style aipamena

ERIKSEN, Aase. Playground Design. Van Nostrand Reinhold, 1985.

MLA aipamena

ERIKSEN, Aase. Playground Design. Van Nostrand Reinhold, 1985.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.