APA aipamena

León, P. E. (1969). Report of the chromosome numbers of some Costa Rican anurans.

Chicago Style aipamena

León, Pedro E. Report of the Chromosome Numbers of Some Costa Rican Anurans. 1969.

MLA aipamena

León, Pedro E. Report of the Chromosome Numbers of Some Costa Rican Anurans. 1969.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.