1.
Designing Retaining Walls, Bulkheads and Seawalls of Treated Timber. Author: American Wood Preservers Institute, 1966
2.
Earth Retaining Structures. Author: W.D. Keeney, AWPI
3.
Improved Standard Designs Pressure-Treated Timber Crib Walls. AWPI, 1969.
Available upon e-mail request​:
info@awc.org.