Citazione Stile APA (7a Edizione)

Showers, V. (1979). World facts and figures: A unique, authoritative collection of comparative information about cities, countries and geographic features of the world. John Wiley & Sons.

Citazione stile Chigago Style (17a edizione)

Showers, Victor. World Facts and Figures: A Unique, Authoritative Collection of Comparative Information About Cities, Countries and Geographic Features of the World. New York [i 3 pozostałe]: John Wiley & Sons, 1979.

Citatione MLA (9a ed.)

Showers, Victor. World Facts and Figures: A Unique, Authoritative Collection of Comparative Information About Cities, Countries and Geographic Features of the World. John Wiley & Sons, 1979.