APA

D.G.&J.P.Hessayon, . (1973). The garden book of Europe. London: Elm Tree Books.

Chicago

D.G.&J.P.Hessayon, . 1973. The garden book of Europe. London: Elm Tree Books.

Harvard

D.G.&J.P.Hessayon, . (1973). The garden book of Europe. London: Elm Tree Books.

MLA

D.G.&J.P.Hessayon, . The garden book of Europe. London: Elm Tree Books. 1973.