Total Midyear Population, ریاستہائے متحدہ مردم شماری بیورو, International Data Base, accessed on جون 29, 2011. Note: Used for Aruba, Cayman Islands, Cook Islands, Cuba, North Korea, Marshall Islands, Montenegro, Samoa, Somalia, Trinidad and Tobago and West Bank.
World Economic Outlook Database, April 2011, International Monetary Fund. Accessed on جون 29, 2011. Note: Used for Afghanistan, Albania, Antigua and Barbuda, The Bahamas, Barbados, Belize, Benin, Bhutan, Burundi, Cape Verde, Central African Republic, Comoros, Democratic Republic of the Congo, Republic of the Congo, Djibouti, Dominica, Fiji, Georgia, Grenada, Guinea, Guinea-Bissau, Guyana, Iceland, Kiribati, Liberia, Mali, Mongolia, Montenegro, Nepal, Niger, Saint Kitts and Nevis, Saint Lucia, Samoa, Sao Tome and Principe, Sierra Leone, Solomon Islands, Suriname, Tonga and Vanuatu.
World Development Indicators, عالمی بنک. Accessed on جون 29, 2011. Note: Used for Bermuda, Chad, Cyprus, Eritrea, Greenland, Federated States of Micronesia, Monaco, Netherlands, New Caledonia and Turkmenistan.
.World Development Indicators, عالمی بنک. Accessed on جون 29, 2011. Note: Used for Bermuda, Cayman Islands, Chad, Cyprus, Eritrea, Greenland, Federated States of Micronesia, Monaco, Netherlands, New Caledonia and Turkmenistan.