Dyfyniad APA

McGinn, A. P., & Peterson, J. A. (1999). Safeguarding the health of oceans. Worldwatch Institute.

Dyfyniad Arddull Chicago

McGinn, Anne Platt, and Jane A. Peterson. Safeguarding the Health of Oceans. Washington, DC: Worldwatch Institute, 1999.

Dyfyniad MLA

McGinn, Anne Platt, and Jane A. Peterson. Safeguarding the Health of Oceans. Worldwatch Institute, 1999.

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