एपीए उद्धरण

Frisch, K. C., & Klempner, D. P. (2001). Recycling of polyurethanes. Technomic Publishing Company.

शिकागो स्टाइल उद्धरण

Frisch, Kurt C., और Daniel Prentice Klempner. Recycling of Polyurethanes. Lancaster: Technomic Publishing Company, 2001.

एमएलए उद्धरण

Frisch, Kurt C., और Daniel Prentice Klempner. Recycling of Polyurethanes. Technomic Publishing Company, 2001.