I had originally cited this resources on my survey design category page, but the link was broken, so here is the correct link. It’s a nice guide. A bit too firm in its opinions, perhaps, but still well worth reading.
Robert Frary. Hints for Designing Effective Questionnaires. Practical Assessment, Research & Evaluation; 5(3): November 1996. Available in PDF format.
You can find an earlier version of this page on my blog.