Kaiser, W. L. (1987). A new view of the world: A handbook to the world map: Peters proyection. Friendship.
Citazione stile Chigago Style (17a edizione)Kaiser, Ward L. A New View of the World: A Handbook to the World Map: Peters Proyection. Nueva York: Friendship, 1987.
Citatione MLA (9a ed.)Kaiser, Ward L. A New View of the World: A Handbook to the World Map: Peters Proyection. Friendship, 1987.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.