RT Article T1 Age 19-30 union formation trajectories across the past 30 years within the U.S.: Delineating heterogeneity in trajectories and its historical and sociodemographic variation JF Research in human development VO 21 IS 1 SP 26 OP 49 A1 Jager, Justin A2 Espinoza, Paul A2 Staff, Jeremy LA English YR 2024 UL https://krimdok.uni-tuebingen.de/Record/1912452383 DO 10.1080/15427609.2024.2366110