Style de citation APA

Madigan, F. C., Sealza, L. P., & Tabor, M. D. (1987). Can NFP be taught in two short, easy lessons? Simplified NFP for isolated and/or busy couples. Philippine population journal, 3(1-4), 51.

Style de citation Chicago

Madigan, F C., L P. Sealza, et M D. Tabor. "Can NFP Be Taught in Two Short, Easy Lessons? Simplified NFP for Isolated And/or Busy Couples." Philippine Population Journal 3, no. 1-4 (1987): 51.

Style de citation MLA

Madigan, F C., et al. "Can NFP Be Taught in Two Short, Easy Lessons? Simplified NFP for Isolated And/or Busy Couples." Philippine Population Journal, vol. 3, no. 1-4, 1987, p. 51.