APA način citiranja (7. izdanje)

Weldon, J., & Levitt, Z. (1975). UFO's: What on earth is happening? Harvest House Publishers.

Čikaški stil citiranja (17. izdanje)

Weldon, John, i Zola Levitt. UFO's: What on Earth Is Happening? Irvine, Calif: Harvest House Publishers, 1975.

MLA način citiranja (9. izdanje)

Weldon, John, i Zola Levitt. UFO's: What on Earth Is Happening? Harvest House Publishers, 1975.