Παραπομπή σε μορφή APA (7η εκδ.)

Zayyan, E. S. N., .Al-Kholy, H., Meyer, G., & .Al-Badawy, S. (1997). The relationship between economic activites and labour force in the Republic of South Africa (1 st. ed.). [s. n.]،.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Zayyan, Ezzat Saleh Nemr, H. .Al-Kholy, Guenter Meyer, και S. .Al-Badawy. The Relationship Between Economic Activites and Labour Force in the Republic of South Africa. 1 st. ed. Cairo: [s. n.]،, 1997.

Παραπομπή σε μορφή MLA (9th εκδ.)

Zayyan, Ezzat Saleh Nemr, et al. The Relationship Between Economic Activites and Labour Force in the Republic of South Africa. 1 st. ed. [s. n.]،, 1997.