APA

Sussman S., Gold W., Sieverts S. & Vogel N. (19810521). Selectivity among large employer group members of a prepaid group practice model HMO: the relationship between employee premium contribution, medical care utilization and market penetration. : The Group health journal.

Chicago

Sussman S, Gold W, Sieverts S and Vogel N. 19810521. Selectivity among large employer group members of a prepaid group practice model HMO: the relationship between employee premium contribution, medical care utilization and market penetration. : The Group health journal.

Harvard

Sussman S., Gold W., Sieverts S. and Vogel N. (19810521). Selectivity among large employer group members of a prepaid group practice model HMO: the relationship between employee premium contribution, medical care utilization and market penetration. : The Group health journal.

MLA

Sussman S, Gold W, Sieverts S and Vogel N. Selectivity among large employer group members of a prepaid group practice model HMO: the relationship between employee premium contribution, medical care utilization and market penetration. : The Group health journal. 19810521.