APA

Fiddelers A. A. A., Nieman F. H. M., Dumoulin J. C. M., van Montfoort A. P. A., Land J. A., Evers J. L. H., Severens J. L. & Dirksen C. D. (20111207). During IVF treatment patient preference shifts from singletons towards twins but only a few patients show an actual reversal of preference. : Human reproduction (Oxford, England).

Chicago

Fiddelers Audrey A A, Nieman Fred H M, Dumoulin John C M, van Montfoort Aafke P A, Land Jolande A, Evers Johannes L H, Severens Johan L and Dirksen Carmen D. 20111207. During IVF treatment patient preference shifts from singletons towards twins but only a few patients show an actual reversal of preference. : Human reproduction (Oxford, England).

Harvard

Fiddelers A. A. A., Nieman F. H. M., Dumoulin J. C. M., van Montfoort A. P. A., Land J. A., Evers J. L. H., Severens J. L. and Dirksen C. D. (20111207). During IVF treatment patient preference shifts from singletons towards twins but only a few patients show an actual reversal of preference. : Human reproduction (Oxford, England).

MLA

Fiddelers Audrey A A, Nieman Fred H M, Dumoulin John C M, van Montfoort Aafke P A, Land Jolande A, Evers Johannes L H, Severens Johan L and Dirksen Carmen D. During IVF treatment patient preference shifts from singletons towards twins but only a few patients show an actual reversal of preference. : Human reproduction (Oxford, England). 20111207.