Balbas, Herbert Y., et al. <br/><br/>
On prime labeling of some classes of graphs / 
Herbert Y. Balbas, Ruffa Jane M. Cainglit, and Meryl B. Ramos 
 - MMSU  City of Batac :  2019 
 - viii, 41 leaves ;  28 cm. 
<br/><br/> Thesis (BS Mathematics) -- Mariano Marcos State University - College of Arts & Sciences, City of Batac, 2019. 
<br/><br/>Bibliography: leaf 38