Dyfyniad APA

Gardner, G. T., Sampat, P., & Peterson, J. A. (1998). Mind over matter: Recasting the role of materials in our lives. Worldwatch Institute.

Dyfyniad Arddull Chicago

Gardner, Gary T., Payal Sampat, and Jane A. Peterson. Mind over Matter: Recasting the Role of Materials in Our Lives. Washington, D.C.: Worldwatch Institute, 1998.

Dyfyniad MLA

Gardner, Gary T., et al. Mind over Matter: Recasting the Role of Materials in Our Lives. Worldwatch Institute, 1998.

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