APA

Crosignani P. G., Parazzini F., La Vecchia C., Meroni S. & Ricci E. (19980806). Clinical overview of hormonal contraception with special emphasis on long-term effects. : The European journal of contraception & reproductive health care : the official journal of the European Society of Contraception.

Chicago

Crosignani P G, Parazzini F, La Vecchia C, Meroni S and Ricci E. 19980806. Clinical overview of hormonal contraception with special emphasis on long-term effects. : The European journal of contraception & reproductive health care : the official journal of the European Society of Contraception.

Harvard

Crosignani P. G., Parazzini F., La Vecchia C., Meroni S. and Ricci E. (19980806). Clinical overview of hormonal contraception with special emphasis on long-term effects. : The European journal of contraception & reproductive health care : the official journal of the European Society of Contraception.

MLA

Crosignani P G, Parazzini F, La Vecchia C, Meroni S and Ricci E. Clinical overview of hormonal contraception with special emphasis on long-term effects. : The European journal of contraception & reproductive health care : the official journal of the European Society of Contraception. 19980806.