APA (7th ed.) Citation

Stiles, D. R., & Stiles, J. (2006). Treehouses and playhouses you can build. Gibbs Smith Publisher.

Chicago Style (17th ed.) Citation

Stiles, David R., and Jeanie Stiles. Treehouses and Playhouses You Can Build. Utah: Gibbs Smith Publisher, 2006.

MLA (9th ed.) Citation

Stiles, David R., and Jeanie Stiles. Treehouses and Playhouses You Can Build. Gibbs Smith Publisher, 2006.