APA
Lilibeth C. David, Yvonne C. F. Lumampao, Josephine H. Hipolito & Philippines. (1999). A handbook on soil transmitted helminthiasis. [Manila]: DOH.
Chicago
Lilibeth C. David, Yvonne C. F. Lumampao, Josephine H. Hipolito and Philippines. 1999. A handbook on soil transmitted helminthiasis. [Manila]: DOH.
Harvard
Lilibeth C. David, Yvonne C. F. Lumampao, Josephine H. Hipolito and Philippines. (1999). A handbook on soil transmitted helminthiasis. [Manila]: DOH.
MLA
Lilibeth C. David, Yvonne C. F. Lumampao, Josephine H. Hipolito and Philippines. A handbook on soil transmitted helminthiasis. [Manila]: DOH. 1999.