APA

United Nations, . (1980). The United Nations Programme for comparative analysys of world fertility survey data. S. l: Universidad de New York.

Chicago

United Nations, . 1980. The United Nations Programme for comparative analysys of world fertility survey data. S. l: Universidad de New York.

Harvard

United Nations, . (1980). The United Nations Programme for comparative analysys of world fertility survey data. S. l: Universidad de New York.

MLA

United Nations, . The United Nations Programme for comparative analysys of world fertility survey data. S. l: Universidad de New York. 1980.