MacMullen, Ramsay. "1 Psychology and Individuals". Why Do We Do What We Do?, Warsaw, Poland: De Gruyter Open Poland, 2014, pp. 13-33. https://doi.org/10.2478/9783110417593.1
MacMullen, R. (2014). 1 Psychology and Individuals. In Why Do We Do What We Do? (pp. 13-33). Warsaw, Poland: De Gruyter Open Poland. https://doi.org/10.2478/9783110417593.1
MacMullen, R. 2014. 1 Psychology and Individuals. Why Do We Do What We Do?. Warsaw, Poland: De Gruyter Open Poland, pp. 13-33. https://doi.org/10.2478/9783110417593.1
MacMullen, Ramsay. "1 Psychology and Individuals" In Why Do We Do What We Do?, 13-33. Warsaw, Poland: De Gruyter Open Poland, 2014. https://doi.org/10.2478/9783110417593.1
MacMullen R. 1 Psychology and Individuals. In: Why Do We Do What We Do?. Warsaw, Poland: De Gruyter Open Poland; 2014. p.13-33. https://doi.org/10.2478/9783110417593.1