APA

EHLERS H., . (1977). CRUCIAL ISSUES IN EDUCATION. ESTADOS UNIDOS DE AMERICA: HOLT, RINEHART AND WINSTON.

Chicago

EHLERS HENRY, . 1977. CRUCIAL ISSUES IN EDUCATION. ESTADOS UNIDOS DE AMERICA: HOLT, RINEHART AND WINSTON.

Harvard

EHLERS H., . (1977). CRUCIAL ISSUES IN EDUCATION. ESTADOS UNIDOS DE AMERICA: HOLT, RINEHART AND WINSTON.

MLA

EHLERS HENRY, . CRUCIAL ISSUES IN EDUCATION. ESTADOS UNIDOS DE AMERICA: HOLT, RINEHART AND WINSTON. 1977.