This article is non-sensical. Every dialect has a different set of phonemes. The article should describe the phonemes in different dialects. The article assumes that there is no distinction within dialects and confuses everything. That's ridiculous.
The article should also explain why the phonemes are abbreviated with those symbols, and not with other symbols. For example, why is /t/ abbreviated like that, and not with the symbol of another allophone within the phoneme, for example the ɾ (fishhook r)?
Besides, the pronunciation should be described with the International Phonetic Alphabet, not with IPA-ASCII. If you want to use IPA-ASCII, use it in addition to the IPA, not as a substitute.
Another thing: the capital "P" in the title is ridiculous. "Phoneme" is a common noun, not a proper noun. Common nouns are not capitalized in Wikipedia article titles. At least that's the custom here.