APA

Ragnarsdottir L. D., Kristjansson A. L., Thorisdottir I. E., Allegrante J. P., Valdimarsdottir H., Gestsdottir S. & Sigfusdottir I. D. (20171204). Cumulative risk over the early life course and its relation to academic achievement in childhood and early adolescence. : Preventive medicine.

Chicago

Ragnarsdottir Laufey Dís, Kristjansson Alfgeir L, Thorisdottir Ingibjorg Eva, Allegrante John P, Valdimarsdottir Heiddis, Gestsdottir Steinunn and Sigfusdottir Inga Dora. 20171204. Cumulative risk over the early life course and its relation to academic achievement in childhood and early adolescence. : Preventive medicine.

Harvard

Ragnarsdottir L. D., Kristjansson A. L., Thorisdottir I. E., Allegrante J. P., Valdimarsdottir H., Gestsdottir S. and Sigfusdottir I. D. (20171204). Cumulative risk over the early life course and its relation to academic achievement in childhood and early adolescence. : Preventive medicine.

MLA

Ragnarsdottir Laufey Dís, Kristjansson Alfgeir L, Thorisdottir Ingibjorg Eva, Allegrante John P, Valdimarsdottir Heiddis, Gestsdottir Steinunn and Sigfusdottir Inga Dora. Cumulative risk over the early life course and its relation to academic achievement in childhood and early adolescence. : Preventive medicine. 20171204.