Marcos, F. E. (1967). Extemporaneous remarks at the First Seminar on Rural Medicine, October 11, 1967].
Chicago-viite (17. p.)Marcos, Ferdinand E. Extemporaneous Remarks at the First Seminar on Rural Medicine, October 11, 1967]. 1967.
MLA-viite (9. p.)Marcos, Ferdinand E. Extemporaneous Remarks at the First Seminar on Rural Medicine, October 11, 1967]. 1967.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.