Pencirian sebatian aktif biologi daripada spesies goniothalamus giganteus Hook. f., Thomas dan Goniothalamus velutinus Airy-Shaw (family annonaceae) - Chang, Leng Chee. (Bangi : Perpustakaan Tun Seri Lanang, 1992)
Tesis (Ijazah Sarjana Sains) - Universiti Kebangsaan Malaysia, Kampus Sabah, 1992.
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Keywords: Bioflavonoids; Flavonoids; Annonaceae