1. Critical realism: An important theoretical perspective for midwifery research 
Denis Walsh, RM, MA, PhD, Kerry Evans, RM, BSc, MA 
Midwifery 
Volume 30, Issue 1, Pages e1-e6 (January 2014)
DOI: /j.midw
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2. Fig. 1
Tree diagram of three ontological levels: empirical, actual, real. (Adapted from Dyson and Brown (2005).)
Midwifery  , e1-e6DOI: ( /j.midw )
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3. Fig. 2 Midwifery 2014 30, e1-e6DOI: (10.1016/j.midw.2013.09.002)
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