Gaya APA

S., L, ,, P., STANLEY, L, ,. (1999). Sampling of Populations : Methods and Applications (3rd ed). Canada: John Wiley & Sons, Inc..

Gaya MLA

S., LEVY, ,, PAUL., STANLEY, LEMESHOW, ,. "Sampling of Populations : Methods and Applications". 3rd ed Canada: John Wiley & Sons, Inc., 1999. MP.