↑ Maton, Anthea; Jean Hopkins; Charles William McLaughlin; Susan Johnson; Maryanna Quon Warner; David LaHart; Jill D. Wright (1993). Human Biology and Health. Englewood Cliffs, New Jersey, USA: Prentice Hall. ISBN0-13-981176-1.
↑ Bruce Alberts; Alexander Johnson; Julian Lewis; Martin Raff; Keith Roberts; Peter Walter (2002). "Leukocyte also known as macrophagesfunctions and percentage breakdown". Molecular Biology of the Cell (4th ed.). New York: Garland Science. ISBN0-8153-4072-9.
