Gaya APA

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

Gaya MLA

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