Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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