Reader's Digest (Australia) Pty. Ltd. (2008). 1001 science questions answered. Reader's Digest.
Cita Chicago (17th ed.)Reader's Digest (Australia) Pty. Ltd. 1001 Science Questions Answered. Ultimo, N.S.W: Reader's Digest, 2008.
Cita MLA (9th ed.)Reader's Digest (Australia) Pty. Ltd. 1001 Science Questions Answered. Reader's Digest, 2008.
Atenció: Aquestes cites poden no estar 100% correctes.