Dyfyniad APA

Segerberg, O. (1971). Where have all the flowers, fishes, birds, trees, water, and air gone?: What ecology is all about. McKay.

Dyfyniad Arddull Chicago

Segerberg, Osborn. Where Have All the Flowers, Fishes, Birds, Trees, Water, and Air Gone?: What Ecology Is All About. New York: McKay, 1971.

Dyfyniad MLA

Segerberg, Osborn. Where Have All the Flowers, Fishes, Birds, Trees, Water, and Air Gone?: What Ecology Is All About. McKay, 1971.

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