APA

Looker A. C., Harris T. B., Madans J. H. & Sempos C. T. (19930902). Dietary calcium and hip fracture risk: the NHANES I Epidemiologic Follow-Up Study. : Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA.

Chicago

Looker A C, Harris T B, Madans J H and Sempos C T. 19930902. Dietary calcium and hip fracture risk: the NHANES I Epidemiologic Follow-Up Study. : Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA.

Harvard

Looker A. C., Harris T. B., Madans J. H. and Sempos C. T. (19930902). Dietary calcium and hip fracture risk: the NHANES I Epidemiologic Follow-Up Study. : Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA.

MLA

Looker A C, Harris T B, Madans J H and Sempos C T. Dietary calcium and hip fracture risk: the NHANES I Epidemiologic Follow-Up Study. : Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA. 19930902.