Cita APA (7a ed.)

Klackenberg, G. (1971). A prospective longitudinal study of children: Data on psychic health and development up to 8 years of age. Acta paediatrica Scandinavica / Supplement.

Cita Chicago Style (17a ed.)

Klackenberg, Gunnar. "A Prospective Longitudinal Study of Children: Data on Psychic Health and Development Up to 8 Years of Age." Acta Paediatrica Scandinavica / Supplement 1971.

Cita MLA (9a ed.)

Klackenberg, Gunnar. "A Prospective Longitudinal Study of Children: Data on Psychic Health and Development Up to 8 Years of Age." Acta Paediatrica Scandinavica / Supplement, 1971.