Fraterna : official bulletin for International Hoya Association - International Hoya Association. (The Association, 1999)

Fraterna : official bulletin for International Hoya Association - International Hoya Association. (The Association, 2000)

Fraterna : official bulletin for International Hoya Association - International Hoya Association. (The Association, 2001)

Fraterna : official bulletin for International Hoya Association - International Hoya Association. (The Association, 2002)

Fraterna : official bulletin for International Hoya Association - International Hoya Association. (The Association, 2003)

Fraterna : official bulletin for International Hoya Association - International Hoya Association. (The Association, 2004)