Dyfyniad APA

Wendy Pfeffer. (2003). Wiggling Worms at Work (Let's-Read-and-Find-Out Science 2) (1.). HarperCollins.

Dyfyniad Arddull Chicago

Wendy Pfeffer. Wiggling Worms at Work (Let's-Read-and-Find-Out Science 2). 1. HarperCollins, 2003.

Dyfyniad MLA

Wendy Pfeffer. Wiggling Worms at Work (Let's-Read-and-Find-Out Science 2). 1. HarperCollins, 2003.

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