APA (7th ed.) Citation

Barell. (1998). PBL: An inquiry approach. SkyLight Training and Pub.

Chicago Style (17th ed.) Citation

Barell. PBL: An Inquiry Approach. Arlington Heights, Ill: SkyLight Training and Pub, 1998.

MLA (8th ed.) Citation

Barell. PBL: An Inquiry Approach. SkyLight Training and Pub, 1998.

Warning: These citations may not always be 100% accurate.