Beck, A. C., & Taylor, E. S. (1966). Beck's obstetrical practice. Williams & Wilkins.
Lua i Stíl Chicago (17ú heag.)Beck, Alfred Charles, agus E. Stewart Taylor. Beck's Obstetrical Practice. Baltimore: Williams & Wilkins, 1966.
Lua MLA (9ú heag.)Beck, Alfred Charles, agus E. Stewart Taylor. Beck's Obstetrical Practice. Williams & Wilkins, 1966.
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