Citação norma APA

Kannus, P., Palvanen, M., Kaprio, J., Parkkari, J., & Koskenvuo, M. (1999). Genetic factors and osteoporotic fractures in elderly people: Prospective 25 year follow up of a nationwide cohort of elderly Finnish twins. BMJ.

Citação norma Chicago

Kannus, Pekka, Mika Palvanen, Jaakko Kaprio, Jari Parkkari, and Markku Koskenvuo. "Genetic Factors and Osteoporotic Fractures in Elderly People: Prospective 25 Year Follow Up of a Nationwide Cohort of Elderly Finnish Twins." BMJ 1999.

Citação norma MLA

Kannus, Pekka, et al. "Genetic Factors and Osteoporotic Fractures in Elderly People: Prospective 25 Year Follow Up of a Nationwide Cohort of Elderly Finnish Twins." BMJ 1999.

Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.