《商务项目设计指南（第2版）》：
　　Even if you select an outside consultant， be sure to completethe survey design steps that follow.Your answers to the remainingquestions will help the firm you select complete the work withexcellence.
　　（2） Constructing the surveyinstrument.（构建调查手段）Now you have entered the stages where it is important to tapinto internal or external survey expertise.Depending on the size andcomplexity of your survey， you may need to involve a survey expertthroughout the remaining steps of the survey planning process.
　　Step 6： Determine who has the information you need .Once youhave identified information and presentation needs， you shouldconsider whom to survey.This is called selecting the "sampleframe" .In most cases， you will gather data from one or more subsetsof the entire universe of people you can contact By making anintelligent choice ofwhom to survey， your results will be accurate andyour survey costs will be lower.Consider the following questions：
　　Who has the information I need？
　　Is my customer base made up of two or more discretegroups， or are all my customers fairly similar？
　　Who decides whether to use my products or services？
　　Do I have their current addresses or phone numbers？
　　What is （are） included in the key group （s） I needinformation from？
　　……