APA aipamena

Reitz, M. F. (2011). The gold mines of Costa Rica.

Chicago Style aipamena

Reitz, Milton Franklin. The Gold Mines of Costa Rica. 2011.

MLA aipamena

Reitz, Milton Franklin. The Gold Mines of Costa Rica. 2011.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.