Sharp, M. K., Utrobičić, A., Gómez, G., Cobo, E., Wager, E., & Hren, D. (2017). The STROBE extensions: Protocol for a qualitative assessment of content and a survey of endorsement. BMJ open, 7(10), e019043. https://doi.org/10.1136/bmjopen-2017-019043
Chicago Style (17th ed.) CitationSharp, Melissa K., Ana Utrobičić, Guadalupe Gómez, Erik Cobo, Elizabeth Wager, and Darko Hren. "The STROBE Extensions: Protocol for a Qualitative Assessment of Content and a Survey of Endorsement." BMJ Open 7, no. 10 (2017): e019043. https://doi.org/10.1136/bmjopen-2017-019043.
MLA (9th ed.) CitationSharp, Melissa K., et al. "The STROBE Extensions: Protocol for a Qualitative Assessment of Content and a Survey of Endorsement." BMJ Open, vol. 7, no. 10, 2017, p. e019043, https://doi.org/10.1136/bmjopen-2017-019043.