So, cite one of the authors that you use to footnote your comment:
“Let’s see 100 hats (with rare bird feathers and beads) at $10 each occupying 64 cubic feet and weighing 25 lbs total vs 100 bales of cotton at 25 cents/lb occupying say 3000 cubic feet and weighing 20 tons.”
One will be fine. Page, paragraph, or chapter will do.
I just gave you an example to make the point. I did not use any source for it. That is what the causal “Let’s see....” indicates to anyone paying attention.