Dyfyniad APA

Calver, M., Bamford, M., Lymbery, A., & McComb, J. (2009). Environmental biology. AUWSF (021197).

Dyfyniad Arddull Chicago

Calver, Mike, Mike Bamford, Alan Lymbery, and Jen McComb. Environmental Biology. Cambridge: AUWSF (021197), 2009.

Dyfyniad MLA

Calver, Mike, et al. Environmental Biology. AUWSF (021197), 2009.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.