Anderson SE, Dallal GE, Must A. Relative weight and race influence average age at menarche: results from two nationally representative surveys of US girls studied 25 years apart. Pediatrics. April 2003, roč. 111, čís. 4 Pt 1, s. 844–50. doi:10.1542/peds.111.4.844. PMID12671122.
Anderson SE, Dallal GE, Must A. Relative weight and race influence average age at menarche: results from two nationally representative surveys of US girls studied 25 years apart. Pediatrics. April 2003, roč. 111, čís. 4 Pt 1, s. 844–50. doi:10.1542/peds.111.4.844. PMID12671122.