[NTG-context] ConTeXt MKIV - vertical titles in bibliography

good day! been trying to come up with a modified bibliography style file based on bibl-apa.tex but i just can't seem to make both the article and book titles vertical in the bibliography output of /placepublications. i tried to remove the \it following the \bgroup commands in the bibl- file to no avail. any help would be greatly appreciated. thanks. joel mendoza