Warren MP (1980). "The effects of exercise on pubertal progression and reproductive function in girls". J. Clin. Endocrinol. Metab.51 (5): 1150–1157. doi:10.1210/jcem-51-5-1150. PMID6775000.
Warren MP (1980). "The effects of exercise on pubertal progression and reproductive function in girls". J. Clin. Endocrinol. Metab.51 (5): 1150–1157. doi:10.1210/jcem-51-5-1150. PMID6775000.