APA (7th ed.) Zitazioa
Ajaegbu H. I. (1977). A new approach to practical work in geography (2nd ed.). Heinemann Educational Books..
Chicago Style (17th ed.) Zitazioa
Ajaegbu H. I. A New Approach to Practical Work in Geography. 2nd ed. London: Heinemann Educational Books., 1977.
MLA (9th ed.) Zitazioa
Ajaegbu H. I. A New Approach to Practical Work in Geography. 2nd ed. Heinemann Educational Books., 1977.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.