APA引文

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

Citación estilo Chicago

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

MLA引文

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

警告：这些引文格式不一定是100％准确.