APA citiranje

Keet, M. P., Jaroszewicz, A. M., & Liebenberg, A. R. (1974). Assessment of gestational age in twins.

Citação norma Chicago

Keet, M P., A M. Jaroszewicz, and A R. Liebenberg. Assessment of Gestational Age in Twins. 1974.

MLA citiranje

Keet, M P., A M. Jaroszewicz, and A R. Liebenberg. Assessment of Gestational Age in Twins. 1974.