Não informado. (1948). Educational series. Florida Department of Natural Resources.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Educational Series. Tallahassee, Fla: Florida Department of Natural Resources, 1948.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Educational Series. Florida Department of Natural Resources, 1948.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.