APA

Penney G., Brechin S., de Souza A., Bankowska U., Belfield T., Gormley M., Olliver M., Hampton N., Howlett-Shipley R., Hughes S., Mack N., O'Brien P., Rowlands S. & Trewinnard K. (20040331). FFPRHC Guidance (January 2004). The copper intrauterine device as long-term contraception. : The journal of family planning and reproductive health care.

Chicago

Penney Gillian, Brechin Susan, de Souza Alison, Bankowska Urszula, Belfield Toni, Gormley Maggie, Olliver Mary, Hampton Naomi, Howlett-Shipley Ruth, Hughes Sarah, Mack Noel, O'Brien Paul, Rowlands Sam and Trewinnard Karen. 20040331. FFPRHC Guidance (January 2004). The copper intrauterine device as long-term contraception. : The journal of family planning and reproductive health care.

Harvard

Penney G., Brechin S., de Souza A., Bankowska U., Belfield T., Gormley M., Olliver M., Hampton N., Howlett-Shipley R., Hughes S., Mack N., O'Brien P., Rowlands S. and Trewinnard K. (20040331). FFPRHC Guidance (January 2004). The copper intrauterine device as long-term contraception. : The journal of family planning and reproductive health care.

MLA

Penney Gillian, Brechin Susan, de Souza Alison, Bankowska Urszula, Belfield Toni, Gormley Maggie, Olliver Mary, Hampton Naomi, Howlett-Shipley Ruth, Hughes Sarah, Mack Noel, O'Brien Paul, Rowlands Sam and Trewinnard Karen. FFPRHC Guidance (January 2004). The copper intrauterine device as long-term contraception. : The journal of family planning and reproductive health care. 20040331.