APA (7th ed.) Citation

Phoenix Learning Group (Firm). (2015). Latitude, longitude and time zones (Revised edition.). Phoenix Learning Group.

Chicago Style (17th ed.) Citation

Phoenix Learning Group (Firm). Latitude, Longitude and Time Zones. Revised edition. [Place of publication not identified]: Phoenix Learning Group, 2015.

MLA (9th ed.) Citation

Phoenix Learning Group (Firm). Latitude, Longitude and Time Zones. Revised edition. Phoenix Learning Group, 2015.