APA (7th ed.) Citation

RUBY, D., & LAMPE, D. (1981). Faster than bullets or rockets with new space-age slings: Electromagnetic launchers. Popular Science, 219(5), 78.

Chicago Style (17th ed.) Citation

RUBY, DANIEL, and DAVID LAMPE. "Faster than Bullets or Rockets with New Space-age Slings: Electromagnetic Launchers." Popular Science 219, no. 5 (1981): 78.

MLA (9th ed.) Citation

RUBY, DANIEL, and DAVID LAMPE. "Faster than Bullets or Rockets with New Space-age Slings: Electromagnetic Launchers." Popular Science, vol. 219, no. 5, 1981, p. 78.