Style de citation APA

Ballweg, J. A., & Bautista-foley, M. L. (1988). Pregnancy status and unwanted births. Philippine population journal, 4(1-4), 14.

Style de citation Chicago

Ballweg, J A., et M L. Bautista-foley. "Pregnancy Status and Unwanted Births." Philippine Population Journal 4, no. 1-4 (1988): 14.

Style de citation MLA

Ballweg, J A., et M L. Bautista-foley. "Pregnancy Status and Unwanted Births." Philippine Population Journal, vol. 4, no. 1-4, 1988, p. 14.