Gaya APA

Richardson, T, M., Nicodemus, W, R. (1981). Sanitation for foodservice workers (3rd edition). New York: Van Nostrand Reinhold.

Gaya MLA

Richardson, Treva, M.., Nicodemus, Wade, R.. "Sanitation for foodservice workers". 3rd edition New York: Van Nostrand Reinhold, 1981. BUKU.