Dyfyniad APA

Jessop, N. M. (1970). Biosphere: A study of life. Prentice-Hall.

Dyfyniad Arddull Chicago

Jessop, Nancy Meyer. Biosphere: A Study of Life. Englewood Cliffs, N.J: Prentice-Hall, 1970.

Dyfyniad MLA

Jessop, Nancy Meyer. Biosphere: A Study of Life. Prentice-Hall, 1970.

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