The GUS Reporter Gene System – Gillian A. HullMartine Devic
Part of the Methods in Molecular Biology™ book series (MIMB, volume 49). The β-Glucuronidase (gus) Reporter Gene System
Gillian A. Hull, Martine Devic
Pages 125-141
Histochemical Localization of GUS Reporter in Plant Tissues
Stanislav Vitha, Microscopy and Imaging Center, Texas A&M University. The protocol is a guideline that should be compatible with many plant specimens. The paper includes a good section of refernces for further reading and alternatve protocls.