The “Ortograpiyang Pambansa” published by the Komisyon sa Wikang Filipino.
PDF copy: https://web.archive.org/web/*/http://www.kwf.gov.ph/wp-content/uploads/Ortograpiyang-Pambansa1.pdf
In the picture: The use of hyphen (“gitling”) as used in surnames.
dek samson Joanne Flores: I am using this style guide.