Measure words appended to other words

[freefall]

What are the rules regarding this in pinyin?

E.g: zhege, but na zhang. Ge is appended to zhe, but zhang is separate from na. Pardon the lack of tone markers.

Thanks a lot.

[skylee]

This may be useful -> Basic Rules of Hanyu Pinyin Orthography (Summary)

Demonstrative pronouns zhè, nà and the interrogative demonstrative pronoun nǎ are separated from the nouns that follow them.

• zhè (ge) rén (this person),
  
• zhè zhī chuán (this boat),
  
• nǎ zhāng bàozhǐ (which newspaper?)
  

zhè, nà, nǎ are linked with xiē, me, yàng, bān, lǐ, biān, huǐr, ge

• zhèxiē (these),
  
• zhège (this one),
  
• nàyàng (that way/then),
  
• zhèhuǐr (at this moment)