Bogue, D. J., & Bogue, E. J. (1980). Comparative birth interval analysis. Community and Family Study Center, University of Chicago.
Lua i Stíl Chicago (17ú heag.)Bogue, Donald Joseph, agus Elizabeth J. Bogue. Comparative Birth Interval Analysis. Chicago, Ill: Community and Family Study Center, University of Chicago, 1980.
Lua MLA (9ú heag.)Bogue, Donald Joseph, agus Elizabeth J. Bogue. Comparative Birth Interval Analysis. Community and Family Study Center, University of Chicago, 1980.
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