APA

Birken S., Chen Y., Gawinowicz M. A., Lustbader J. W., Pollak S., Agosto G., Buck R. & O'Connor J. (19931006). Separation of nicked human chorionic gonadotropin (hCG), intact hCG, and hCG beta fragment from standard reference preparations and raw urine samples. : Endocrinology.

Chicago

Birken S, Chen Y, Gawinowicz M A, Lustbader J W, Pollak S, Agosto G, Buck R and O'Connor J. 19931006. Separation of nicked human chorionic gonadotropin (hCG), intact hCG, and hCG beta fragment from standard reference preparations and raw urine samples. : Endocrinology.

Harvard

Birken S., Chen Y., Gawinowicz M. A., Lustbader J. W., Pollak S., Agosto G., Buck R. and O'Connor J. (19931006). Separation of nicked human chorionic gonadotropin (hCG), intact hCG, and hCG beta fragment from standard reference preparations and raw urine samples. : Endocrinology.

MLA

Birken S, Chen Y, Gawinowicz M A, Lustbader J W, Pollak S, Agosto G, Buck R and O'Connor J. Separation of nicked human chorionic gonadotropin (hCG), intact hCG, and hCG beta fragment from standard reference preparations and raw urine samples. : Endocrinology. 19931006.