एपीए उद्धरण

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

शिकागो स्टाइल उद्धरण

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

एमएलए उद्धरण

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