DAVIS P.H. and HEYWOOD V.H. (1963). PRINCIPLES OF ANGIOSPERM TAXONOMY. OLIVER & BOYD.
Chicago Edition CitationDAVIS P.H. and HEYWOOD V.H. PRINCIPLES OF ANGIOSPERM TAXONOMY. LONDON: OLIVER & BOYD, 1963.
MLA Edition CitationDAVIS P.H. and HEYWOOD V.H. PRINCIPLES OF ANGIOSPERM TAXONOMY. OLIVER & BOYD, 1963.
Warning: These citations may not always be 100% accurate.