I'm stuck on these two questions

in the mla works cited entry, what is "space vehicles"?

johnson, harris. “space vehicles.” millennium

encyclopedia. 4th ed. 1991.

an article in an encyclopedia

a book in the millennium series

an article in a journal

an article on a website

read the works cited entry for a magazine article.

yakov, dmitri, “space horizons.” scientific

life feb. 2008: 13–19.
what is the proper way to format an in-text citation using mla style?

(yakov 13–19)

(yakov, 13–19)

(dmitri yakov, 13–19)

(yakov, pp. 13–19)