APA

Levings R. L., Wilbur L. A., Evermann J. F., Stoll I. R., Starling D. E., Spillers C. A., Gustafson G. A., McKeiman A. J., Rhyan J. C., Halverson D. H. & Rosenbusch R. F. (19970423). Abortion and death in pregnant bitches associated with a canine vaccine contaminated with bluetongue virus. : Developments in biological standardization.

Chicago

Levings R L, Wilbur L A, Evermann J F, Stoll I R, Starling D E, Spillers C A, Gustafson G A, McKeiman A J, Rhyan J C, Halverson D H and Rosenbusch R F. 19970423. Abortion and death in pregnant bitches associated with a canine vaccine contaminated with bluetongue virus. : Developments in biological standardization.

Harvard

Levings R. L., Wilbur L. A., Evermann J. F., Stoll I. R., Starling D. E., Spillers C. A., Gustafson G. A., McKeiman A. J., Rhyan J. C., Halverson D. H. and Rosenbusch R. F. (19970423). Abortion and death in pregnant bitches associated with a canine vaccine contaminated with bluetongue virus. : Developments in biological standardization.

MLA

Levings R L, Wilbur L A, Evermann J F, Stoll I R, Starling D E, Spillers C A, Gustafson G A, McKeiman A J, Rhyan J C, Halverson D H and Rosenbusch R F. Abortion and death in pregnant bitches associated with a canine vaccine contaminated with bluetongue virus. : Developments in biological standardization. 19970423.