Where can I buy the English manga volumes in Singapore?

Hi! I'm aware an English translation of the Hyouka manga is licensed and sold in Malaysia and Singapore.

I have a Singapore trip planned later this year and really want to get my hands on whichever volumes I can (especially the first few and most recent few). Does anyone know which stores to visit to find them/any other ways to buy them in Singapore? I'm okay with secondhand volumes too! Kinokuniya is the only place I found mentioned online.

Thanks!