Zimmerman, Michael J. (2002) Intrinsic vs. extrinsic value, Stanford Encyclopedia of Philosophy, October 22 (updated 9 January 2019).
Intrinsic value (sometimes called terminal value) is the value something has for its own sake. Instrumental value (sometimes called terminal value) is the value something has by virtue of its effects on other things.
Intrinsic value (sometimes called terminal value) is the value something has for its own sake. Instrumental value, by contrast, is the value something has by virtue of its effects on other things.