APA-viite (7. p.)

Pyle, D., van Andel, T., Paschos, P., & van den Bogaard, P. (1998). An exceptionally thick Middle Pleistocene tephra layer from Epirus, Greece.

Chicago-viite (17. p.)

Pyle, D., T. van Andel, P. Paschos, ja P. van den Bogaard. An Exceptionally Thick Middle Pleistocene Tephra Layer from Epirus, Greece. 1998.

MLA-viite (9. p.)

Pyle, D., et al. An Exceptionally Thick Middle Pleistocene Tephra Layer from Epirus, Greece. 1998.