Whittington John. (2016). Systemic Coaching & Constellations. Kogan Page Limited.
Lua i Stíl Chicago (17ú heag.)Whittington John. Systemic Coaching & Constellations. London: Kogan Page Limited, 2016.
Lua MLA (9ú heag.)Whittington John. Systemic Coaching & Constellations. Kogan Page Limited, 2016.
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