@book {246, title = {Clone of An illustrated guide to the flowers of Saudi Arabia}, year = {1985}, publisher = {Scorpion}, organization = {Scorpion}, author = {Collenette, S.} } @book {590, title = { Flowering plants of the world.}, year = {1978}, publisher = { OUP, Oxford.}, organization = { OUP, Oxford.}, author = {Heywood, V. H.} }