FAO. (1988). FAO conservation guide N.17: National parks planning: a manual with annotated examples. Rome: FAO.
Παραπομπή Chicago StyleFAO. FAO Conservation Guide N.17: National Parks Planning: A Manual With Annotated Examples. Rome: FAO, 1988.
Παραπομπή MLAFAO. FAO Conservation Guide N.17: National Parks Planning: A Manual With Annotated Examples. Rome: FAO, 1988.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.