[cisco-voip] Voice VLANs and Multiple Switches ?

[Dane]

Someone correct me if I am wrong please, but I have always been under
the perception that when it comes to voice vlans (actually any vlan
really) that Cisco recommends as a best practice to keep vlans from
spanning multiple switches?

For instance, say you have a building with four access switches
dispersed throughout.  Isn't the best practice to maintain a seperate
voice and data vlan per access switch?  So I should four data and four
voice vlans in this example.

Simply looking to determine if it is in fact Cisco best practice.
Anyone happen to have anything from Cisco to confirm or deny this?