Norman, W. V., Guilbert, E. R., Okpaleke, C., Hayden, A. S., Steven Lichtenberg, E., Paul, M., . . . Jones, H. E. (2016). Abortion health services in Canada: Results of a 2012 national survey. Can Fam Physician.

Norman, Wendy V., Edith R. Guilbert, Christopher Okpaleke, Althea S. Hayden, E. Steven Lichtenberg, Maureen Paul, Katharine O’Connell White, ja Heidi E. Jones. "Abortion Health Services in Canada: Results of a 2012 National Survey." Can Fam Physician 2016.

Norman, Wendy V., et al. "Abortion Health Services in Canada: Results of a 2012 National Survey." Can Fam Physician 2016.