APA

Dupuy H. J., Gruvaeus G., . (19780426). The construction and utility of three indexes of intellectual achievement: an intellectual-development (ID) index a socio-intellectual-status (SIS) index a differential-intellectual-development (DID) index U.S. children and youths, 6-17 years. : Vital and health statistics. Series 2, Data evaluation and methods research.

Chicago

Dupuy H J, Gruvaeus G, . 19780426. The construction and utility of three indexes of intellectual achievement: an intellectual-development (ID) index a socio-intellectual-status (SIS) index a differential-intellectual-development (DID) index U.S. children and youths, 6-17 years. : Vital and health statistics. Series 2, Data evaluation and methods research.

Harvard

Dupuy H. J., Gruvaeus G., . (19780426). The construction and utility of three indexes of intellectual achievement: an intellectual-development (ID) index a socio-intellectual-status (SIS) index a differential-intellectual-development (DID) index U.S. children and youths, 6-17 years. : Vital and health statistics. Series 2, Data evaluation and methods research.

MLA

Dupuy H J, Gruvaeus G, . The construction and utility of three indexes of intellectual achievement: an intellectual-development (ID) index a socio-intellectual-status (SIS) index a differential-intellectual-development (DID) index U.S. children and youths, 6-17 years. : Vital and health statistics. Series 2, Data evaluation and methods research. 19780426.