Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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