Παραπομπή APA

Willgoose, C. E. (1979). Environmental health commitment for survival. W B Saunders.

Παραπομπή Chicago Style

Willgoose, Carl E. Environmental Health Commitment for Survival. Philadelphia: W B Saunders, 1979.

Παραπομπή MLA

Willgoose, Carl E. Environmental Health Commitment for Survival. W B Saunders, 1979.