Gaya APA
Brooks, H. (2010).
Basics Of Retaining Wall Design : 8th Edition (8th Edition).
Amerika Serikat:
HBA Publications, Inc.
Gaya MLA
Brooks, Hugh.
"Basics Of Retaining Wall Design : 8th Edition".
8th Edition
Amerika Serikat:
HBA Publications, Inc,
2010.
Text.