Cita APA (7th ed.)

Meyer, H. W., & Manchester, S. R. (1997). The oligocene bridge creek flora of the John Day Formation, Oregon. University of California Press.

Cita Chicago (17th ed.)

Meyer, Herbert W., i Steven R. Manchester. The Oligocene Bridge Creek Flora of the John Day Formation, Oregon. Berkeley, USA: University of California Press, 1997.

Cita MLA (9th ed.)

Meyer, Herbert W., i Steven R. Manchester. The Oligocene Bridge Creek Flora of the John Day Formation, Oregon. University of California Press, 1997.