APA
(1993). Plant development and hormonal status in the Jerusalem artichoke [Helianthus tuberosus L.]. [s.l.]: [s.n.].
Chicago
1993. Plant development and hormonal status in the Jerusalem artichoke [Helianthus tuberosus L.]. [s.l.]: [s.n.].
Harvard
(1993). Plant development and hormonal status in the Jerusalem artichoke [Helianthus tuberosus L.]. [s.l.]: [s.n.].
MLA
Plant development and hormonal status in the Jerusalem artichoke [Helianthus tuberosus L.]. [s.l.]: [s.n.]. 1993.