APA

Ben Saad H., Prefaut C., Tabka Z., Mtir A. H., Chemit M., Hassaoune R., Ben Abid T., Zara K., Mercier G., Zbidi A. & Hayot M. (20090209). 6-minute walk distance in healthy North Africans older than 40 years: influence of parity. : Respiratory medicine.

Chicago

Ben Saad Helmi, Prefaut Christian, Tabka Zouhair, Mtir Abdelaziz Hadj, Chemit Mohamed, Hassaoune Rym, Ben Abid Tarek, Zara Khelifa, Mercier Grégoire, Zbidi Abdelkrim and Hayot Maurice. 20090209. 6-minute walk distance in healthy North Africans older than 40 years: influence of parity. : Respiratory medicine.

Harvard

Ben Saad H., Prefaut C., Tabka Z., Mtir A. H., Chemit M., Hassaoune R., Ben Abid T., Zara K., Mercier G., Zbidi A. and Hayot M. (20090209). 6-minute walk distance in healthy North Africans older than 40 years: influence of parity. : Respiratory medicine.

MLA

Ben Saad Helmi, Prefaut Christian, Tabka Zouhair, Mtir Abdelaziz Hadj, Chemit Mohamed, Hassaoune Rym, Ben Abid Tarek, Zara Khelifa, Mercier Grégoire, Zbidi Abdelkrim and Hayot Maurice. 6-minute walk distance in healthy North Africans older than 40 years: influence of parity. : Respiratory medicine. 20090209.