APA ציטוט

Erickson, J. (1991). Target earth!: Asteroid collisions past and future. Tab Books.

Chicago Style (17th ed.) Citation

Erickson, Jon. Target Earth!: Asteroid Collisions Past and Future. Palo Alto: Tab Books, 1991.

ציטוט MLA

Erickson, Jon. Target Earth!: Asteroid Collisions Past and Future. Tab Books, 1991.