APA (7. basım) Alıntı

(1996). Pre natal testing for Down's syndrome. Down's Synfrome Association.

Chicago Style (17. basım) Atıf

Pre Natal Testing for Down's Syndrome. Londres: Down's Synfrome Association, 1996.

MLA (9th ed.) Atıf

Pre Natal Testing for Down's Syndrome. Down's Synfrome Association, 1996.