Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.