Maranan, Ed, <br/><br/>
Hagdan sa langit / 
Ed Maranan. 
 - Quezon City, Philippines ;  C & E Publishing, Inc.,  2010. 
 - 21 pages :  colored illustrations, figures ; 
<br/><br/><label>ISBN: </label>978-971-584-909-8 
<br/><br/><label>Dewey Class. No.: </label>372.4  / M325h