APA (7th ed.) Citation

Jergenson, P., Jergenson, R., & Keppel, W. (2008). How to build with grid beam : a fast, easy, and affordable system for constructing almost anything / Phil Jergenson, Richard Jergenson & Wilma Keppel: A fast, easy, and affordable system for constructing almost anything. New Society ; Gazelle [distributor].

Chicago Style (17th ed.) Citation

Jergenson, Phil, Richard Jergenson, and Wilma Keppel. How to Build with Grid Beam : A Fast, Easy, and Affordable System for Constructing Almost Anything / Phil Jergenson, Richard Jergenson & Wilma Keppel: A Fast, Easy, and Affordable System for Constructing Almost Anything. Gabriola Island, B.C. : Lancaster: New Society ; Gazelle [distributor], 2008.

MLA (9th ed.) Citation

Jergenson, Phil, et al. How to Build with Grid Beam : A Fast, Easy, and Affordable System for Constructing Almost Anything / Phil Jergenson, Richard Jergenson & Wilma Keppel: A Fast, Easy, and Affordable System for Constructing Almost Anything. New Society ; Gazelle [distributor], 2008.

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