APA aipamena

Nunley, R. E. (1960). The distribution of population in Costa Rica. National Academy of Sciences, National Research Council.

Chicago Style aipamena

Nunley, Robert Edward. The Distribution of Population in Costa Rica. Washington: National Academy of Sciences, National Research Council, 1960.

MLA aipamena

Nunley, Robert Edward. The Distribution of Population in Costa Rica. National Academy of Sciences, National Research Council, 1960.