APA (7th ed.) Zitazioa
Sifuna, D. N., & Sawamura, N. (2010). Challenges of quality education in Sub-Saharan African countries. Nova Science Publishers, Inc..
Chicago Style (17th ed.) Zitazioa
Sifuna, D. N., eta Nobuhide Sawamura. Challenges of Quality Education in Sub-Saharan African Countries. Hauppauge, N.Y.: Nova Science Publishers, Inc., 2010.
MLA (9th ed.) Zitazioa
Sifuna, D. N., eta Nobuhide Sawamura. Challenges of Quality Education in Sub-Saharan African Countries. Nova Science Publishers, Inc., 2010.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.