APA

Oldfield S., . (1997). Status survey and conservation action plan Cactus and succulent plants / Sara Oldfield (comp.). Cambridge: Cactus and Succulent Specialist Group.

Chicago

Oldfield Sara, . 1997. Status survey and conservation action plan Cactus and succulent plants / Sara Oldfield (comp.). Cambridge: Cactus and Succulent Specialist Group.

Harvard

Oldfield S., . (1997). Status survey and conservation action plan Cactus and succulent plants / Sara Oldfield (comp.). Cambridge: Cactus and Succulent Specialist Group.

MLA

Oldfield Sara, . Status survey and conservation action plan Cactus and succulent plants / Sara Oldfield (comp.). Cambridge: Cactus and Succulent Specialist Group. 1997.