APA引文

Lena, H., & Charlotte, S. (2003). Evaluation of the Economic Return of Preventive Health Care (FRISKKO) at Herd Level in Dairy Herds in Sweden. BMC.

Citação norma Chicago

Lena, Hult, and Sandgren Charlotte. Evaluation of the Economic Return of Preventive Health Care (FRISKKO) At Herd Level in Dairy Herds in Sweden. BMC, 2003.

MLA引文

Lena, Hult, and Sandgren Charlotte. Evaluation of the Economic Return of Preventive Health Care (FRISKKO) At Herd Level in Dairy Herds in Sweden. BMC, 2003.

警告：這些引文格式不一定是100％准確.