(1963). The world book encyclopedia. Vol.6 (F). Chicago: Field Enterprises Educational Corporation.
Παραπομπή Chicago StyleThe World Book Encyclopedia. Vol.6 (F). Chicago: Field Enterprises Educational Corporation, 1963.
Παραπομπή MLAThe World Book Encyclopedia. Vol.6 (F). Chicago: Field Enterprises Educational Corporation, 1963.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.