APA

International botanical congress I. A. 1., . (1959). Proceedings of the. Montreal: International botanical congress.

Chicago

International botanical congress IX Aug 19-29-1959, . 1959. Proceedings of the. Montreal: International botanical congress.

Harvard

International botanical congress I. A. 1., . (1959). Proceedings of the. Montreal: International botanical congress.

MLA

International botanical congress IX Aug 19-29-1959, . Proceedings of the. Montreal: International botanical congress. 1959.