APA
Rodrigues A. M. L. B. P. M., . (1984). Conservation of number, seriation, and classification abilities of rural Portuguese children at first and second Years of primary school. Boston: University School of Education.
Chicago
Rodrigues Ana Maria Leitão B P M, . 1984. Conservation of number, seriation, and classification abilities of rural Portuguese children at first and second Years of primary school. Boston: University School of Education.
Harvard
Rodrigues A. M. L. B. P. M., . (1984). Conservation of number, seriation, and classification abilities of rural Portuguese children at first and second Years of primary school. Boston: University School of Education.
MLA
Rodrigues Ana Maria Leitão B P M, . Conservation of number, seriation, and classification abilities of rural Portuguese children at first and second Years of primary school. Boston: University School of Education. 1984.