Παραπομπή σε μορφή APA (7η εκδ.)

Gravells, A. (2016). Principles & practices of quality assurance: A guide for internal and external quality assurers in the FE and skills sector. Learning Matters.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Gravells, Ann. Principles & Practices of Quality Assurance: A Guide for Internal and External Quality Assurers in the FE and Skills Sector. SAGE: Learning Matters, 2016.

Παραπομπή σε μορφή MLA (8th εκδ.)

Gravells, Ann. Principles & Practices of Quality Assurance: A Guide for Internal and External Quality Assurers in the FE and Skills Sector. Learning Matters, 2016.