APA (7th ed.) Citation

Collis, C., & Douglas, R. (2017). Where in Niue =: Ko fe. Summer Rose Books.

Chicago Style (17th ed.) Citation

Collis, Carolyn, and Rennie Douglas. Where in Niue =: Ko Fe. [Wellington]: Summer Rose Books, 2017.

MLA (9th ed.) Citation

Collis, Carolyn, and Rennie Douglas. Where in Niue =: Ko Fe. Summer Rose Books, 2017.