Patricia Lauber. (1996). You're Aboard Spaceship Earth (Let's-Read-and-Find-Out Science). HarperCollins.
Dyfyniad Arddull ChicagoPatricia Lauber. You're Aboard Spaceship Earth (Let's-Read-and-Find-Out Science). HarperCollins, 1996.
Dyfyniad MLAPatricia Lauber. You're Aboard Spaceship Earth (Let's-Read-and-Find-Out Science). HarperCollins, 1996.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.