APA (7th ed.) Citation

Audus, L. J. (1959). Plant growth substances / by L.J Audus (2d ed.). Leonard Hill Books.

Chicago Style (17th ed.) Citation

Audus, L. J. Plant Growth Substances / by L.J Audus. 2d ed. London: Leonard Hill Books, 1959.

MLA (9th ed.) Citation

Audus, L. J. Plant Growth Substances / by L.J Audus. 2d ed. Leonard Hill Books, 1959.