Alıntılar

APA (7. basım) Alıntı
Godwin, M., Ruhland, L., Casson, I., MacDonald, S., Delva, D., Birtwhistle, R., . . . Seguin, R. (2003). Pragmatic controlled clinical trials in primary care: The struggle between external and internal validity. BMC Med Res Methodol.
Chicago Style (17. basım) Atıf
Godwin, Marshall, Lucia Ruhland, Ian Casson, Susan MacDonald, Dianne Delva, Richard Birtwhistle, Miu Lam, ve Rachelle Seguin. "Pragmatic Controlled Clinical Trials in Primary Care: The Struggle Between External and Internal Validity." BMC Med Res Methodol 2003.
MLA (9th ed.) Atıf
Godwin, Marshall, et al. "Pragmatic Controlled Clinical Trials in Primary Care: The Struggle Between External and Internal Validity." BMC Med Res Methodol, 2003.
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