性交[2013-03-30]. ISBN 0538736550. (原始内容存档于2013-12-04). Winner B, Peipert JF, Zhao Q, Buckel C, Madden T, Allsworth JE, Secura GM. Effectiveness of long-acting reversible
生育控制ISBN 9789241563888. (原始内容存档于2016-11-16). Winner, B; Peipert, JF; Zhao, Q; Buckel, C; Madden, T; Allsworth, JE; Secura, GM. Effectiveness of Long-Acting Reversible