View source for Reference:Sell1970a


		{{Reference
		| entryid=sell1970a
		| titleid=Reference:sell1970a
		| checksum=b0b1bab9cbb884bf55e8c5d9ed635fc3
    		| verbatimtext=Sell, P. D. and P. F. Yeo. 1970. A revision of the North American species of Euphrasia L. (Scrophulariaceae). Bot. J. Linn. Soc. 63: 189–234.
    
		| author=Sell, P.D.;
				Yeo, P.F.
    		| year=1970
    		| title=A revision of the North American species of Euphrasia L. (Scrophulariaceae)
    		| journal=Bot. J. Linn. Soc
    		| volume=63
    		| pages=189–234
    
  
		}}