Vega, P. C. (2015). The Pinctada maxima: The producer of the world's loveliest pearls. Animal Scene.
Chicago-viite (17. p.)Vega, Patricia Calzo. "The Pinctada Maxima: The Producer of the World's Loveliest Pearls." Animal Scene 2015.
MLA-viite (9. p.)Vega, Patricia Calzo. "The Pinctada Maxima: The Producer of the World's Loveliest Pearls." Animal Scene, 2015.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.