APA ציטוט

Schmucker, C., Bluemle, A., Briel, M., Portalupi, S., Lang, B., Motschall, E., . . . Meerpohl, J. J. (2013). A protocol for a systematic review on the impact of unpublished studies and studies published in the gray literature in meta-analyses. BioMed Central.

Citação norma Chicago

Schmucker, Christine, et al. A Protocol for a Systematic Review On the Impact of Unpublished Studies and Studies Published in the Gray Literature in Meta-analyses. BioMed Central, 2013.

ציטוט MLA

Schmucker, Christine, et al. A Protocol for a Systematic Review On the Impact of Unpublished Studies and Studies Published in the Gray Literature in Meta-analyses. BioMed Central, 2013.