APA (7th ed.) Citation

Aguirre, E. L., & Joson, I. B. (1985). The second coming: 1986 marks comet Hally's second return this century. National Research Council of the Philippines.

Chicago Style (17th ed.) Citation

Aguirre, Edwin L., and Imelda B. Joson. The Second Coming: 1986 Marks Comet Hally's Second Return This Century. Bicutan, Taguig: National Research Council of the Philippines, 1985.

MLA (9th ed.) Citation

Aguirre, Edwin L., and Imelda B. Joson. The Second Coming: 1986 Marks Comet Hally's Second Return This Century. National Research Council of the Philippines, 1985.