Matias, Ambrocio Melvin, AND 		Fontanilla, Ian Kendrich.
" Optimizing the Utility of Allium cepa L. var. aggregatum (sibuyas Tagalog) for the Allium Test by Elucidating its Mitotic Periodicity and Rhythmicity Under Varying Light Conditions" <em>Science Diliman: A Journal of Pure and Applied Sciences</em> [Online], Volume 23 Number 1 (14 September 2011)