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APA Citation
Margaria-Steffen, T., Graf, S., & Larsen, K. G. (. G. (Eds.) (2019). Models, Mindsets, Meta : The What, the How, and the Why Not? : Essays Dedicated to Bernhard Steffen on the Occasion of His 60th Birthday. Cham, Sswitzerland : Springer. http://access.bl.uk/ark:/81055/vdc_100083509723.0x000001