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.]،.
Lua i Stíl Chicago (17ú heag.)Zayyan, Ezzat Saleh Nemr, H. .Al-Kholy, Guenter Meyer, agus S. .Al-Badawy. The Relationship Between Economic Activites and Labour Force in the Republic of South Africa. 1 st. ed. Cairo: [s. n.]،, 1997.
Lua MLA (9ú heag.)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.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.