Παραπομπή σε μορφή APA (7η εκδ.)

Professors World Peace Academy & Gray, K. R. (1991). PWPA Conference Eastern region: Employment and education: Strategies and opportunities for development. Professors World Peace Academy.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Professors World Peace Academy και Kenneth R. Gray. PWPA Conference Eastern Region: Employment and Education: Strategies and Opportunities for Development. Nairobi: Professors World Peace Academy, 1991.

Παραπομπή σε μορφή MLA (8th εκδ.)

Professors World Peace Academy και Kenneth R. Gray. PWPA Conference Eastern Region: Employment and Education: Strategies and Opportunities for Development. Professors World Peace Academy, 1991.