APA (7th ed.) Zitazioa
Obionu, C. (2018). Guide to tropical public health and community medicine (First edition.). Ezu Books Limited.
Chicago Style (17th ed.) Zitazioa
Obionu, Christopher. Guide to Tropical Public Health and Community Medicine. First edition. [Place of publication not identified]: Ezu Books Limited, 2018.
MLA (9th ed.) Zitazioa
Obionu, Christopher. Guide to Tropical Public Health and Community Medicine. First edition. Ezu Books Limited, 2018.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.