Helou, K., El Helou, N., Mahfouz, M., Mahfouz, Y., Salameh, P., & Harmouche-Karaki, M. (2017). Validity and reliability of an adapted arabic version of the long international physical activity questionnaire. BMC Public Health.

Helou, Khalil, Nour El Helou, Maya Mahfouz, Yara Mahfouz, Pascale Salameh, και Mireille Harmouche-Karaki. "Validity and Reliability of an Adapted Arabic Version of the Long International Physical Activity Questionnaire." BMC Public Health 2017.

Helou, Khalil, et al. "Validity and Reliability of an Adapted Arabic Version of the Long International Physical Activity Questionnaire." BMC Public Health 2017.