ISO has what's known as "Invocation principle" which reads:
Once a portion of the ISO GPS system is invoked in a mechanical engineering product documentation, the
entire ISO GPS system is invoked, unless otherwise indicated on the documentation, e.g. by reference to a
relevant document.
So, essentially, specifying the entire group of standards is optional.
Nevertheless the following may be recommended:
ISO 1101 as fundamental standard.
ISO 14405 (with appropriate modifiers) to specify how you measure your sizes
ISO 8015 for fundamental principles
ISO 2768 (with appropriate modifiers) or alternative for general tolerances
Also don't forget:
View projection method
Dimensional units (if operating from US or Liberia)
Workpiece edges treatment
Surface texture
"For every expert there is an equal and opposite expert"
Arthur C. Clarke Profiles of the future