APA

Crawford G. C., Puschner B., Dierenfeld E. S. & Dunker F. (20100218). Survey of minerals and fat-soluble vitamins in captive black and white ruffed lemurs (Varecia variegata). : Journal of zoo and wildlife medicine : official publication of the American Association of Zoo Veterinarians.

Chicago

Crawford Graham C, Puschner Birgit, Dierenfeld Ellen S and Dunker Freeland. 20100218. Survey of minerals and fat-soluble vitamins in captive black and white ruffed lemurs (Varecia variegata). : Journal of zoo and wildlife medicine : official publication of the American Association of Zoo Veterinarians.

Harvard

Crawford G. C., Puschner B., Dierenfeld E. S. and Dunker F. (20100218). Survey of minerals and fat-soluble vitamins in captive black and white ruffed lemurs (Varecia variegata). : Journal of zoo and wildlife medicine : official publication of the American Association of Zoo Veterinarians.

MLA

Crawford Graham C, Puschner Birgit, Dierenfeld Ellen S and Dunker Freeland. Survey of minerals and fat-soluble vitamins in captive black and white ruffed lemurs (Varecia variegata). : Journal of zoo and wildlife medicine : official publication of the American Association of Zoo Veterinarians. 20100218.