APA
(1981). ANNALS OF BOTANY. NEW YORK & LONDON: ACADEMIC PRESS.
Chicago
1981. ANNALS OF BOTANY. NEW YORK & LONDON: ACADEMIC PRESS.
Harvard
(1981). ANNALS OF BOTANY. NEW YORK & LONDON: ACADEMIC PRESS.
MLA
ANNALS OF BOTANY. NEW YORK & LONDON: ACADEMIC PRESS. 1981.