Παραπομπή σε μορφή APA (7η εκδ.)

Castro, S. H. (1993). Study on labor Force concepts: Operational definitions and measurementsSonia H. Castro and Manuel Laopao. Bureau of Labor and Employment Statistics, DOLE/ILO-ARTEP.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Castro, Sonia H. Study on Labor Force Concepts: Operational Definitions and MeasurementsSonia H. Castro and Manuel Laopao. Manila: Bureau of Labor and Employment Statistics, DOLE/ILO-ARTEP, 1993.

Παραπομπή σε μορφή MLA (9th εκδ.)

Castro, Sonia H. Study on Labor Force Concepts: Operational Definitions and MeasurementsSonia H. Castro and Manuel Laopao. Bureau of Labor and Employment Statistics, DOLE/ILO-ARTEP, 1993.