I agree with the second best practice but feel that the code example is still somewhat hard to read. I like to format select statements as follows:

select distinct

clo.clone_id,

clc.collection_name,

clo.source_clone_id,

clo.image_clone_id,

lib.library_name,

lib.vector_name,

lib.host_name,

loc.plate,

loc.plate_row,

loc.plate_column,

clo.catalog_number,

clo.acclist,

clo.vendor_id,

clc.value,

lib.species,

seq.cluster

from clone...