Which preposition to use with imperturbability

of Occurrences 8%

" Etta glanced at Paul, who returned De Chauxville's bland gaze with all the imperturbability of a prince.

in Occurrences 2%

He was the very personification of punctiliousness and always displayed sublime imperturbability in exigencies of great moment.

than Occurrences 1%

She was on her own territory at this work, playing her own game; and she was more alarmed by De Chauxville's imperturbability than by any thing he had said.

Which preposition to use with  imperturbability