Batuyong, Mae Ann R. <br/><br/>
Rubiaceae flora including a checklist of vascular plants different mountains of Ilocos Norte, Northwestern Luzon, Philippines / 
Mae Ann R. Batuyong 
 - Manila :   University of Santo Tomas,   2021. 
 - xvi, 212 leaves :  28 cm.  
<br/><br/> DISS (Doctor of Philosophy in Biology, major in Plant Sciences) 
<br/><br/>Bibliography : leaves 142-150