El mundo de acuerdo a Humphrey | 
                        |
|---|---|
| Authors: | Birney, Betty G. | 
| Publisher: | Penguin Young Readers Group | 
| BISAC/Subject: | JUV019000, JUV035000, JUV002190 | 
| ISBN: | 9780698175617, Related ISBNs: 0147514193, 0698175611, 9780147514196, 9780698175617 | 
| Classification: | Fiction | 
| Number of pages: | 144, | 
| Audience: | Children/juvenile | 
"Humphrey es simpático y de gran corazón. Ya la lectura de este libro es simplemente ¡buena-buena-buena!"—Kirkus Reviews
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