Gaya APA
D.Pratt, H. et al. (1979).
Fleas of public health importance and their control .
Atlanta:
Us Departemen of Health Education adn Welfare.
Gaya MLA
D.Pratt, H. et al..
Fleas of public health importance and their control.
Atlanta:
Us Departemen of Health Education adn Welfare,
1979.
Text.