Khalifa, A. (2010). The expanding forms of preparation and participation.
Style de citation Chicago (17e éd.)Khalifa, Ahmed. The Expanding Forms of Preparation and Participation. 2010.
Style de citation MLA (8e éd.)Khalifa, Ahmed. The Expanding Forms of Preparation and Participation. 2010.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.