Não informado. Philippine Abstracts. National Institute of Science and Technology, Division of Documentation.
Citação do estilo Chicago (17ª ed.)Não informado. Philippine Abstracts. Manila: National Institute of Science and Technology, Division of Documentation.
Citação MLA (8ª ed.)Não informado. Philippine Abstracts. National Institute of Science and Technology, Division of Documentation.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.