Cita APA (7th ed.)
HETTEMA, J., & ET AL. (1999). A MULTIVARIATE GENETIC ANALYSIS OF THE USE OF TOBACCO, ALCOHOL, AND CAFFEINE IN A POPULATION BASED SAMPLE OF MALE AND FEMALE TWINS.
Cita Chicago (17th ed.)
HETTEMA, J.M, i ET AL. A MULTIVARIATE GENETIC ANALYSIS OF THE USE OF TOBACCO, ALCOHOL, AND CAFFEINE IN A POPULATION BASED SAMPLE OF MALE AND FEMALE TWINS. 1999.
Cita MLA (9th ed.)
HETTEMA, J.M, i ET AL. A MULTIVARIATE GENETIC ANALYSIS OF THE USE OF TOBACCO, ALCOHOL, AND CAFFEINE IN A POPULATION BASED SAMPLE OF MALE AND FEMALE TWINS. 1999.
Atenció: Aquestes cites poden no estar 100% correctes.