You've asked a tricky, yet important question... there are two main interpretations of nama-rupa - each with vastly different connotations.
For the phenomenological "name and form" interpretation, I recommend the writings of Bhikkhu Nanananda, Nanavira, and the sutta quoted above by Polar Buddha.
For the ontological "mentality and materiality" interpretation, well... I'll let someone who subscribes to that interpretation recommend you something.
"Do not force others, including children, by any means whatsoever, to adopt your views, whether by authority, threat, money, propaganda, or even education." - Ven. Thich Nhat Hanh
"The uprooting of identity is seen by the noble ones as pleasurable; but this contradicts what the whole world sees." (Snp 3.12)
"To argue with a person who has renounced the use of reason is like administering medicine to the dead" - Thomas Paine