Cita APA (7th ed.)
De Vos, A. S. (2011). Research at grass roots: For the social sciences and human services professions (4th ed.). Van Schaik.
Cita Chicago (17th ed.)
De Vos, A. S. Research at Grass Roots: For the Social Sciences and Human Services Professions. 4th ed. Pretoria: Van Schaik, 2011.
Cita MLA (9th ed.)
De Vos, A. S. Research at Grass Roots: For the Social Sciences and Human Services Professions. 4th ed. Van Schaik, 2011.
Atenció: Aquestes cites poden no estar 100% correctes.