对多研究或多作者的一般引用
Severallinesofevidencesuggestthat…
Previousresearchhasestablishedthat…
Datafromseveralstudiessuggestthat…
Itisnowwellestablishedfromavarietyofstudiesthat…
Anumberofstudieshavepostulated假定，假设aconvergencebetween…
SurveyssuchasthatconductedbySmith()haveshownthat...
Manyrecentstudies(e.g.Smith,;Jones,)haveshownthat…
Traditionally,ithasbeenarguedthat...(e.g.Smith,;Jones,).
Twentycohortstudy队列研究analyseshaveexaminedtherelationshipbetween...
Severalbiographies传记ofBrownhavebeenpublished.Smith()presents...
InpreviousstudiesonX,differentvariableshavebeenfoundtoberelatedto...
Anumberofauthorshaveconsideredtheeffectsof…(Smith,;Jones,).
Manyhistorianshavearguedthat...(e.g.Jones,;Johnson,;Smith,).
Thereisaconsensus共识amongsocialscientiststhat...(e.g.Jones,;Johnson,;...
DatafromseveralsourceshaveidentifiedtheincreasedXandYassociatedwithobesity.
Atleastcase-controlstudiesworldwidehaveexaminedtherelationshipbetween...
Ithasbeendemonstratedthatahighintake摄入ofXresultsindamageto...(Smith,;...).
Numerousstudieshaveattemptedtoexplain...(forexample,Smith,;Jones,;...).
PreviousresearchfindingsintoXhavebeeninconsistentandcontradictory(Smith,;...).
Somecross-sectionalstudiessuggestanassociationbetweenXandY(Smith,;Jones,).
Therearealargenumberofpublishedstudies(e.g.,Smith,;…)thatdescribethelinkbetween…
SeveralrecentstudiesinvestigatingXhavebeencarriedouton…
Recentevidencesuggeststhat...(Smith,;Jones,;Johnson,).
Recently,invitrostudies体外研究haveshownthatXcan...(Smithetal.,;Jonesetal.,).
Inrecentyears,afewauthorshavebegunto…(Smith,;Jones,;Johnson,).
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