APA-viite (7. p.)

Calvert, W. H., Hyatt, M. B., & Mendoza Villaseñor, N. P. (1986). The effects of understory vegetation on the survival of overwintering Monarch butterflies, (Danaus plexippus L.) in Mexico. Instituto de Ecología, A.C.

Chicago-viite (17. p.)

Calvert, William H., Martin B. Hyatt, ja Norma P. Mendoza Villaseñor. The Effects of Understory Vegetation on the Survival of Overwintering Monarch Butterflies, (Danaus Plexippus L.) in Mexico. Instituto de Ecología, A.C, 1986.

MLA-viite (9. p.)

Calvert, William H., et al. The Effects of Understory Vegetation on the Survival of Overwintering Monarch Butterflies, (Danaus Plexippus L.) in Mexico. Instituto de Ecología, A.C, 1986.