Dyfyniad APA

Bengtsson, A. (1972). Adventure playgrounds. Crosby Lockwood Staples.

Dyfyniad Arddull Chicago

Bengtsson, Arvid. Adventure Playgrounds. London: Crosby Lockwood Staples, 1972.

Dyfyniad MLA

Bengtsson, Arvid. Adventure Playgrounds. Crosby Lockwood Staples, 1972.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.