Gaya APA

Swanson, C, P., Grobstein, C. (NULL). The strategy of life . San: San Fransisco: W.H. Freeman and company; 1965.

Gaya MLA

Swanson, Carl, P.., Grobstein, Clifford. "The strategy of life". San: San Fransisco: W.H. Freeman and company; 1965, NULL. Text.