View source for Reference:Ballard1998a


		{{Reference
		| entryid=ballard1998a
		| titleid=Reference:ballard1998a
		| checksum=8721401c05e51c293c04729b938dc813
    		| verbatimtext=Ballard, H. E., K. J. Sytsma, and R. R. Kowal. 1998. Shrinking the violets: Phylogenetic relationships of infrageneric groups in Viola (Violaceae) based on internal transcribed spacer DNA sequences. Syst. Bot. 23: 439–458.
    
		| author=Ballard, H.E.;
				Sytsma, K.J.;
				Kowal, R.R.
    		| year=1998
    		| title=Shrinking the violets: Phylogenetic relationships of infrageneric groups in Viola (Violaceae) based on internal transcribed spacer DNA sequences
    		| journal=Syst. Bot
    		| volume=23
    		| pages=439–458
    
  
		}}