APA-referens (7:e uppl.)

(1991). Flight service specialist initial qualifications course: Content validation of FAA Academy course 50232 / Dana Broach.

Chicago-referens (17:e uppl.)

Flight Service Specialist Initial Qualifications Course: Content Validation of FAA Academy Course 50232 / Dana Broach. 1991.

MLA-referens (9:e uppl.)

Flight Service Specialist Initial Qualifications Course: Content Validation of FAA Academy Course 50232 / Dana Broach. 1991.

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