Não informado. (2021). Annual Report of the Canal Zone Plant Introduction Gardens. Panama Canal Press.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Annual Report of the Canal Zone Plant Introduction Gardens. Panamá: Panama Canal Press, 2021.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Annual Report of the Canal Zone Plant Introduction Gardens. Panama Canal Press, 2021.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.