Gallagher, Margaret (1978). The development and pilot operation of an assessment center with implications for the selection of school principals (Ed.D. thesis). Western Michigan University. OCLC4584178. ProQuest.
Gallagher, Margaret (1972). The value of play and its implications for education in the development of the whole person (M.Sc. thesis). University of Dayton. OCLC8200672.
Gallagher, Margaret (1978). The development and pilot operation of an assessment center with implications for the selection of school principals (Ed.D. thesis). Western Michigan University. OCLC4584178. ProQuest.