APA
Akerele O., Heywood V. & Synge H. (1991). Conservation of medicinal plants. Cambridge: Cambridge University Press.
Chicago
Akerele Olayiwola, Heywood Vernon and Synge Hugh. 1991. Conservation of medicinal plants. Cambridge: Cambridge University Press.
Harvard
Akerele O., Heywood V. and Synge H. (1991). Conservation of medicinal plants. Cambridge: Cambridge University Press.
MLA
Akerele Olayiwola, Heywood Vernon and Synge Hugh. Conservation of medicinal plants. Cambridge: Cambridge University Press. 1991.