APA (7th ed.) Citation

Packard, T. T., Dortch, Q., 7004249480, & 6701785246. (1975). Particulate protein-nitrogen in North Atlantic surface waters. Marine Biology, 33(4), 347.

Chicago Style (17th ed.) Citation

Packard, T. T., Q. Dortch, 7004249480, and 6701785246. "Particulate Protein-nitrogen in North Atlantic Surface Waters." Marine Biology 33, no. 4 (1975): 347.

MLA (9th ed.) Citation

Packard, T. T., et al. "Particulate Protein-nitrogen in North Atlantic Surface Waters." Marine Biology, vol. 33, no. 4, 1975, p. 347.