Sankt Henrikslegendenby Tuomas HeikkiläReview by: Jenny JochensUniversity of Illinois Press2010DOI 10.2307/40908170
Heikkilä et al. RespondHeikkilä, KatriinaAmerican Journal of Public Health2014DOI 10.2105/ajph.2013.301801
In Memorium - Richard E. Heikklla 1942 - 1991American Chemical SocietyAmerican Chemical Society1991DOI 10.1021/tx00021a600
Kirchengeschichte Finnlandsby Simo Heininen; Heikkilä MarkkuReview by: Sammeli JuntunenSixteenth Century Journal Publishers2003DOI 10.2307/20061748
The Economics of Planning, E.J. HeikkilaBarrie NeedhamSpringer Netherlands2001DOI 10.1023/a:1012575100017
Kirchengeschichte Finnlandsby Simo Heininen; Heikkilä MarkkuReview by: Sammeli JuntunenSixteenth Century Journal Publishers2004DOI 10.2307/20476933
The Economics of Planningby E.J. HeikkilaReview by: Barrie NeedhamSpringer Netherlands2001DOI 10.2307/41107191
Richard E. Heikkila: A TributeRoger DwoisinJohn Wiley and Sons1992DOI 10.1111/j.1749-6632.1992.tb24517.x