APA (7th ed.) Citation

Piepho, H. (2012). A SAS macro for generating letter displays of pairwise mean comparisons. Communications in Biometry & Crop Science, 7(1), 4.

Chicago Style (17th ed.) Citation

Piepho, Hans-Peter. "A SAS Macro for Generating Letter Displays of Pairwise Mean Comparisons." Communications in Biometry & Crop Science 7, no. 1 (2012): 4.

MLA (9th ed.) Citation

Piepho, Hans-Peter. "A SAS Macro for Generating Letter Displays of Pairwise Mean Comparisons." Communications in Biometry & Crop Science, vol. 7, no. 1, 2012, p. 4.