Gaya APA

Simons, M. et al (2016). Does Age Make a Difference? Age as Moderator in the Association Between Time Perspective and Happiness (J Happiness Stud). USA: Springer.

Gaya MLA

Simons, Marianne. et al. "Does Age Make a Difference? Age as Moderator in the Association Between Time Perspective and Happiness". J Happiness Stud USA: Springer, 2016. Text.