Phoenix Learning Group (Firm). (2015). Latitude, longitude and time zones (Revised edition.). Phoenix Learning Group.
Chicago Style (17th ed.) CitationPhoenix Learning Group (Firm). Latitude, Longitude and Time Zones. Revised edition. [Place of publication not identified]: Phoenix Learning Group, 2015.
ציטוט MLAPhoenix Learning Group (Firm). Latitude, Longitude and Time Zones. Revised edition. Phoenix Learning Group, 2015.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.