Cita APA (7th ed.)

Heald, F. (1902). Laboratory manual in elementary biology. Willard N. Clute.

Cita Chicago (17th ed.)

Heald, F.DF. Laboratory Manual in Elementary Biology. Binghamton, New York: Willard N. Clute, 1902.

Cita MLA (9th ed.)

Heald, F.DF. Laboratory Manual in Elementary Biology. Willard N. Clute, 1902.