| 日本語 | jpn-000 |
| 快楽原則 | |
| català | cat-000 | principi del plaer |
| English | eng-000 | pleasure principle |
| English | eng-000 | pleasure-pain principle |
| English | eng-000 | pleasure-unpleasure principle |
| suomi | fin-000 | mielihyväperiaate |
| português | por-000 | princípio de prazer |
| español | spa-000 | principio del placer |