Παραπομπή σε μορφή APA (7η εκδ.)
Simkins, T. (1977). Non-formal education and development: Some critical issues. [University of Manchester, Department of Adult and Higher Education].
Παραπομπή σε μορφή Chicago (17η εκδ.)
Simkins, Tim. Non-formal Education and Development: Some Critical Issues. [Manchester]: [University of Manchester, Department of Adult and Higher Education], 1977.
Παραπομπή σε μορφή MLA (9th εκδ.)
Simkins, Tim. Non-formal Education and Development: Some Critical Issues. [University of Manchester, Department of Adult and Higher Education], 1977.
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