APA (7e ed.) Bronvermelding

Maceda, W. (1971). Biology: The science of living things; laboratory manual and workbook. Felta Book Sales.

Chicago (17e ed.) Bronvermelding

Maceda, Wilfredo. Biology: The Science of Living Things; Laboratory Manual and Workbook. Manila: Felta Book Sales, 1971.

MLA (9e ed.) Bronvermelding

Maceda, Wilfredo. Biology: The Science of Living Things; Laboratory Manual and Workbook. Felta Book Sales, 1971.