Ishak Mohd. Essa,  Dato' Andika Indera <br/><br/>
Financial statements :  State of Trengganu / 
by Ishak Mohd. Essa 
 - Kuala Lumpur :  The Government Press,  1956. 
<br/><br/> Kepunyaan PTSL : 1955 (salinan Fotokopi)