Citazione Stile APA (7a Edizione)

Glenn, J. (1964). Letters to John Glenn. World Book Encyclopedia Science Service; book trade distribution by Doubleday.

Citazione stile Chigago Style (17a edizione)

Glenn, John. Letters to John Glenn. Houston, Tex: World Book Encyclopedia Science Service; book trade distribution by Doubleday, 1964.

Citatione MLA (9a ed.)

Glenn, John. Letters to John Glenn. World Book Encyclopedia Science Service; book trade distribution by Doubleday, 1964.