APA

Artunduaga M. A., Quintanilla-Dieck M. D. L., Greenway S., Betensky R., Nicolau Y., Hamdan U., Jarrin P., Osorno G., Brent B., Eavey R., Seidman C. & Seidman J. G. (20090923). A classic twin study of external ear malformations, including microtia. : The New England journal of medicine.

Chicago

Artunduaga Maria A, Quintanilla-Dieck Maria D L, Greenway Steven, Betensky Rebecca, Nicolau Yamileth, Hamdan Usama, Jarrin Patricia, Osorno Gabriel, Brent Burt, Eavey Roland, Seidman Christine and Seidman J G. 20090923. A classic twin study of external ear malformations, including microtia. : The New England journal of medicine.

Harvard

Artunduaga M. A., Quintanilla-Dieck M. D. L., Greenway S., Betensky R., Nicolau Y., Hamdan U., Jarrin P., Osorno G., Brent B., Eavey R., Seidman C. and Seidman J. G. (20090923). A classic twin study of external ear malformations, including microtia. : The New England journal of medicine.

MLA

Artunduaga Maria A, Quintanilla-Dieck Maria D L, Greenway Steven, Betensky Rebecca, Nicolau Yamileth, Hamdan Usama, Jarrin Patricia, Osorno Gabriel, Brent Burt, Eavey Roland, Seidman Christine and Seidman J G. A classic twin study of external ear malformations, including microtia. : The New England journal of medicine. 20090923.