APA

Ungerleider R. M., Bengur A. R., Kessenich A. L., Liekweg R. J., Hart E. M., Rice B. A., Miller C. E., Lockwood N. W., Knauss S. A., Jaggers J., Sanders S. P. & Greeley W. J. (19970821). Risk factors for higher cost in congenital heart operations. : The Annals of thoracic surgery.

Chicago

Ungerleider R M, Bengur A R, Kessenich A L, Liekweg R J, Hart E M, Rice B A, Miller C E, Lockwood N W, Knauss S A, Jaggers J, Sanders S P and Greeley W J. 19970821. Risk factors for higher cost in congenital heart operations. : The Annals of thoracic surgery.

Harvard

Ungerleider R. M., Bengur A. R., Kessenich A. L., Liekweg R. J., Hart E. M., Rice B. A., Miller C. E., Lockwood N. W., Knauss S. A., Jaggers J., Sanders S. P. and Greeley W. J. (19970821). Risk factors for higher cost in congenital heart operations. : The Annals of thoracic surgery.

MLA

Ungerleider R M, Bengur A R, Kessenich A L, Liekweg R J, Hart E M, Rice B A, Miller C E, Lockwood N W, Knauss S A, Jaggers J, Sanders S P and Greeley W J. Risk factors for higher cost in congenital heart operations. : The Annals of thoracic surgery. 19970821.