Rodriguez, M. C. (1983). Strange disease puzzles scientists. Bulletin Today.
Cita Chicago (17th ed.)Rodriguez, Marcia C. "Strange Disease Puzzles Scientists." Bulletin Today 1983.
Cita MLA (9th ed.)Rodriguez, Marcia C. "Strange Disease Puzzles Scientists." Bulletin Today, 1983.
Atenció: Aquestes cites poden no estar 100% correctes.