Dyfyniad APA
Grinde, B. (2012). The Biology of Happiness. Springer Netherlands. https://doi.org/10.1007/978-94-007-4393-9
Dyfyniad Arddull Chicago
Grinde, Bjørn. The Biology of Happiness. Dordrecht: Springer Netherlands, 2012. https://doi.org/10.1007/978-94-007-4393-9.
Dyfyniad MLA
Grinde, Bjørn. The Biology of Happiness. Springer Netherlands, 2012. https://doi.org/10.1007/978-94-007-4393-9.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.