APA ציטוט

Hopewell, S., & Clarke, M. (2004). Impact of grey literature on systematic reviews of randomized trials.

Chicago Style (17th ed.) Citation

Hopewell, S., and M. Clarke. Impact of Grey Literature on Systematic Reviews of Randomized Trials. 2004.

ציטוט MLA

Hopewell, S., and M. Clarke. Impact of Grey Literature on Systematic Reviews of Randomized Trials. 2004.