APA (7th ed.) Citation

Glenn, J. (1964). Letters to John Glenn, with comments by John H. Glenn, Jr. World Book Encyclopedia Science Service.

Chicago Style (17th ed.) Citation

Glenn, John. Letters to John Glenn, with Comments by John H. Glenn, Jr. Houston, Texas: World Book Encyclopedia Science Service, 1964.

MLA (9th ed.) Citation

Glenn, John. Letters to John Glenn, with Comments by John H. Glenn, Jr. World Book Encyclopedia Science Service, 1964.