Parashas Vayikra · Aliyah 1 · Passuk 2
Chabad.org — English translation + Rashi
Torah Temima points to Yerushalmi Shekalim 1:4 (verified locus on the word adam including converts).
Sefaria — Yerushalmi Shekalim 1:4
English: “A person” (adam) — to include converts.
R’ Eliezer #1 (ריבוי) — inclusive force of the word adam to bring converts into the scope of those who may bring a voluntary offering.
Converts are included among those who may bring offerings under this chapter. (The following word mikem then excludes the renegade, as treated on Chullin 5a.)